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Instructional Video24:21
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\n\"Intro\n\n
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\nFlipped Math\n
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\nIntro to Trigonometry\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nExpand trigonometric ratios beyond right triangles. Pupils start with a review of trigonometric ratios and then take a look at angles in standard position to determine their measurements. Scholars discover how to find coterminal angles...\n
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Instructional Video4:38
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\n\"SOHCAHTOA\n\n
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\nFuseSchool\n
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\nSOHCAHTOA - Finding Missing Sides Part 1\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nExplore the meaning and application of the three trigonometric ratios. A thorough video reviews the trig ratios and then shows how to apply them in triangle problems. The instructor demonstrates several examples finding both side and...\n
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Instructional Video
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\n\"Introduction\n\n
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\nFuseSchool\n
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\nIntroduction to SOHCAHTOA\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nYou might not be able to pronounce it, but everyone remembers SOHCAHTOA. Young mathematicians learn a way to remember the three major trigonometric ratios. They see how the first letters of certain words lead to the mnemonic. \n
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Worksheet
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\n\"Trigonometric\n\n
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\nCurated OER\n
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\nTrigonometric Ratios\n

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\n\nFor Students\n\n10th - 12th\n
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\nIn this trigonometric ratios worksheet, students determine the value of trigonometric ratios.  They find the area of triangles, determine the length of one side, and compute the degrees in an angle.  This five-page worksheet...\n
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Worksheet
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\n\"Circular\n\n
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\nCurated OER\n
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\nCircular Trigonometric Functions\n

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\n\nFor Students\n\n11th - 12th\n
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\nIn this Pre-calculus/Trigonometry worksheet, students prove trigonometric identities and find all values that satisfy the equations of circular trigonometric functions. The four page worksheet contains twenty-four problems. Answers are...\n
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Worksheet
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\n\"Trigonometric\n\n
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\nCurated OER\n
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\nTrigonometric Function\n

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\n\nFor Students\n\n11th\n
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\nIn this trigonometric functions worksheet, 11th graders solve and complete 6 various types of problems. First, they express each of the expressions in trigonometric form. Then, students use DeMoivre's Theorem to express each of the...\n
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Instructional Video8:38
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\n\"What\n\n
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\nCurated OER\n
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\nWhat are the Trigonometric Reciprocal Identities?\n

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\n\nFor Teachers\n\n8th - 11th\n
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\nBy using the trigonometric ratios in a right triangle, the instructor derives definitions for cosecant, secant, and cotangent.\n
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Instructional Video4:50
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\n\"Limits\n\n
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\nKrista King Math\n
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\nLimits of Trig Functions: Everything You Need to Know!\n

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\n\nFor Students\n\n11th - Higher Ed\n
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\nDiscover how to find limits of trigonometric functions. Viewers learn a strategy to calculate limits of trigonometric functions. They see how an expression can be rewritten to one whose limits are already known.\n
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Instructional Video
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\n\"Decoding\n\n
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\nFuseSchool\n
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\nDecoding Basic Trigonometric Ratios\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nDemonstrate the calculator keystrokes necessary for finding a measure of an angle using trigonometry. A straight forward lesson explains how to calculate an angle measure given a sine, cosine, or tangent ratio. The narrator...\n
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Handout
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\n\"Trig\n\n
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\nTrig Cheat Sheet\n

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\n\nFor Teachers\n\n10th - 12th\n\nStandards\n
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\nYour pre-calculus learners will make use of this wonderful cheat sheet that summarizes all things trigonometric. Definitions based on both the unit circle and the right triangle are included, as well as many convenient trigonometric...\n
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Instructional Video10:01
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\n\"Fun\n\n
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\nCurated OER\n
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\nFun Trig Problem\n

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\n\nFor Students\n\n11th - Higher Ed\n
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\nIf solving trigonometric equations is your idea of fun, then this video is correctly titled. Here Sal uses trigonometric identities, the quadratic formula, and inverse trigonometric functions to solve a trigonometric equation sent in by...\n
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Instructional Video10:01
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\n\"Fun\n\n
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\nKhan Academy\n
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\nFun Trig Problem\n

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\n\nFor Students\n\n10th - 12th\n
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\nIf solving trigonometric equations is your idea of fun, then this video is correctly titled. Sal uses trigonometric identities, the quadratic formula, and inverse trigonometric functions to solve a trigonometric equation sent in by a...\n
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Handout
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\n\"Trigonometry\n\n
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\nCurated OER\n
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\nTrigonometry Review Sheet\n

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\n\nFor Students\n\n9th - 12th\n\nStandards\n
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\nGet the trig facts fast, and use the review sheet as a guide in the classroom. The worksheet also includes a document version if any changes are needed to the problems. The information includes a small degree/radian chart, a graph of all...\n
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Lesson Plan
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\n\"Trig\n\n
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\nCurated OER\n
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\nTrig Transformations\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nLearners investigate trigonometric function.  In this Algebra II lesson, high schoolers explore functional notation and transformational graphing of trigonometric functions. \n
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Lesson Plan
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\n\"Investigating\n\n
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\nCurated OER\n
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\nInvestigating Trigonometric Ratios Through Similar Right Triangles\n

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\n\nFor Teachers\n\n9th - 10th\n
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\nLearners identify similar and congruent right triangles. In this geometry lesson, students use trigonometric ratios to identify missing sides and angles of a triangle. They differentiate similar and congruent triangles.\n
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Lesson Plan
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\n\"Ratios\n\n
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\nCurated OER\n
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\nRatios in Right Triangles\n

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\nLearners calculate the sides of right triangles in this trigonometric ratios instructional activity. They use Cabri Jr. software and TI-83 or TI-84 calculators to find the side lengths and their ratios to each other for various...\n
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Lesson Plan
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\n\"Exploring\n\n
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\nCurated OER\n
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\nExploring Trigonometric Ratios\n

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\nStudents identify the ratios of trig functions. In this trigonometry instructional activity, students construct triangles and use it to derive the values of sine, cosine and tangent. They use Cabri software to create the visual of the...\n
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Worksheet
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\n\"Inverse\n\n
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\nCurated OER\n
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\nInverse Trig Functions: Domain and Range\n

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\n\nFor Students\n\n9th - Higher Ed\n
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\nIn this trigonometric functions worksheet, students calculate the domain and range of the three basic trig functions. There are 6 equations.\n
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Unit Plan
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\n\"Module\n\n
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\nMathematics Vision Project\n
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\nModule 7: Trigonometric Functions, Equations, and Identities\n

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\n\nFor Students\n\n10th - 12th\n\nStandards\n
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\nShow your class that trigonometric functions have characteristics of their own. A resource explores the features of trigonometric functions. Learners then connect those concepts to inverse trigonometric functions and trigonometric...\n
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Unit Plan
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\n\"Similarity\n\n
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\nMathematics Vision Project\n
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\nSimilarity and Right Triangle Trigonometry\n

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\nStarting with similar triangles and dilation factors, this unit quickly and thoroughly progresses into the world of right triangle features and trigonometric relationships. Presented in easy-to-attack modules with copious application...\n
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Lesson Plan
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\n\"Trigonometry\n\n
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\nEngageNY\n
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\nTrigonometry and the Pythagorean Theorem\n

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\n\nFor Students\n\n9th - 11th\n\nStandards\n
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\nAncient Egyptians sure knew their trigonometry! Pupils learn how the pyramid architects applied right triangle trigonometry. When comparing the Pythagorean theorem to the trigonometric ratios, they learn an important connection that...\n
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Assessment
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\n\"Hopewell\n\n
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\nInside Mathematics\n
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\nHopewell Geometry\n

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\n\nFor Teachers\n\n9th - 12th\n\nStandards\n
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\nThe Hopewell people of the central Ohio Valley used right triangles in the construction of earthworks. Pupils use the Pythagorean Theorem to determine missing dimensions of right triangles used by the Hopewell people. The assessment task...\n
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Lesson Plan
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\n\"Unknown\n\n
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\nEngageNY\n
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\nUnknown Angles\n

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\n\nFor Students\n\n9th - 10th\n\nStandards\n
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\nHow do you solve an equation like trigonometry? Learners apply their understanding of trigonometric ratios to find unknown angles in right triangles. They learn the meaning of arcsine, arccosine, and arctangent. Problems include...\n
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Lesson Plan
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\n\"Special\n\n
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\nOdell Education\n
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\nSpecial Right Triangles and Right Triangle Trigonometry\n

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\n\nFor Teachers\n\n9th - 11th\n\nStandards\n
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\nRight triangles are so special! Use special right triangles to discover the trigonometric ratios. Pairs construct special right triangles and find the values of the ratios of the sides. In the process, they discover the ratios stay the...\n
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