{"results":"
\n\n
\n
\n
\n
Instructional Video9:57
\n
\n
\n
\n\"Trig\n\n
\n
\n
\n
\nKhan Academy\n
\n

\nTrig Identities Part 2 (Part 4 If You Watch the Proofs)\n

\n
\n\nFor Students\n\n10th - 12th\n
\n
\n
\nIn this video, Sal reviews the basic trigonometric definitions and identities, including the sum of angle formulas, and then derives the double angle formulas.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Worksheet
\n
\n
\n
\n\"Trigonometry\n\n
\n
\n
\n
\nCurated OER\n
\n

\nTrigonometry Worksheet: Double Angle Formula (1)\n

\n
\n\nFor Students\n\n11th - 12th\n
\n
\n
\nStudents use the double angle formula to solve one problem. They are given the problem: if sin(a)=3/5, and a is an acute angle, use the double angle formula to find exact values of given sin, cosign, and tangent within the quadrant of...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Worksheet
\n
\n
\n
\n\"Taylor\n\n
\n
\n
\n
\nCurated OER\n
\n

\nTaylor Series\n

\n
\n\nFor Students\n\n9th - Higher Ed\n
\n
\n
\nIn this calculus worksheet, students solve various functions for the Taylor Series using a variety of solving methods including the double angle formula, partial fractions, and u substitution. There are 8 questions.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video8:35
\n
\n
\n
\n\"Trig\n\n
\n
\n
\n
\nKhan Academy\n
\n

\nTrig Identities Part 3 (Part 5 If You Watch the Proofs), Trigonometry\n

\n
\n\nFor Students\n\n10th - 12th\n
\n
\n
\nSal takes the mystery out of the trigonometric identities by showing how easily they can be derived. He continues with a problem he started in the video �Trig Identities part three (part five if you watch the proofs) and proves the trig...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Addition\n\n
\n
\n
\n
\nEngageNY\n
\n

\nAddition and Subtraction Formulas 2\n

\n
\n\nFor Teachers\n\n11th - 12th\n\nStandards\n
\n
\n
\nKnowing the addition formulas allows for the calculations of double and half formulas. The fourth installment of 16 has the class use the addition formula to develop the double angle trigonometric formulas. Using the double formula,...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Lesson Plan
\n
\n
\n
\n\"Identities\n\n
\n
\n
\n
\nCurated OER\n
\n

\nIdentities and Trigonometric Values\n

\n
\n\nFor Teachers\n\n9th - 11th\n
\n
\n
\nStudents solve trigonometric equations. In this precalculus lesson plan, students prove trigonometric identities using the Pythagorean Theorem. They apply the addition formulas for sine and cosine to prove different identities.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"Wolfram\n\n
\n
\n
\n
\nWolfram Research\n
\n

\nWolfram Math World: Double Angle Formulas\n

\n
\n\nFor Students\n\n9th - 10th\n
\n
\n
\nPart of Eric Weisstein's comprehensive math site, this page deals with double-angle formulas. This site includes traditional trigonomic double-angle functions as well as hyperbolic trigonometric function. Includes links to related terms...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video
\n
\n
\n
\n\"Khan\n\n
\n
\n
\n
\nKhan Academy\n
\n

\nKhan Academy: Trigonometry: Trigonometry Identity Review/fun\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nVideo showing how to derive additional trigonometric identities, including the double angle formulas, from the sine and cosine of the sum and difference of two angles. Includes link to additional practice problems. [11:07]\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video
\n
\n
\n
\n\"Khan\n\n
\n
\n
\n
\nKhan Academy\n
\n

\nKhan Academy: Trigonometry: Trig Identities Part 2\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nVideo deriving the double angle formulas for sine and cosine as well as the start of finding the cosine of the opposite of an angle. Reviews basic trigonometric ratio definitions and some basic trigonometric identities. [9:57]\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Instructional Video
\n
\n
\n
\n\"Study\n\n
\n
\n
\n
\nStudy Pug\n
\n

\nStudy Pug: Double Angle Identities\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nIn this lesson, you will learn how to make use of the double-angle identities, a.k.a. double-angle formulas to find the sine and cosine of a double angle. It's hard to simplify complex trigonometric functions without these formulas. [6:23]\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Handout
\n
\n
\n
\n\"Sierra\n\n
\n
\n
\n
\nOther\n
\n

\nSierra College: Trigonometric Identities\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nProvides trigonometric identities, which include fundamental identities, even-odd identities, addition formulas, double-angle formulas, subtraction formulas, product-sum formulas, and identities for sin squared and cos squared.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Handout
\n
\n
\n
\n\"Mathway:\n\n
\n
\n
\n
\nOther\n
\n

\nMathway: Trigonometry Formulas\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nResource provides trigonometry formulas for unit circle, reciprocal identities, ratio identities, Pythagorean identities, sum and difference formulas, and double-angle formulas.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"University\n\n
\n
\n
\n
\nUniversity of Saskatchewan (Canada)\n
\n

\nUniversity of Saskatchewan: Trigonometric Identities\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nThe University of Saskatchewan provides an explanation of trigonometric identities, including the reciprocal identities, the addition and subtraction formulas with sine and cosine, and the double angle formulas. There are links to...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"Varsity\n\n
\n
\n
\n
\nVarsity Tutors \n
\n

\nVarsity Tutors: Hotmath: Practice Problems: Double and Half Angle Formulas\n

\n
\n\nFor Students\n\n9th - 10th\n
\n
\n
\nTwenty-two problems present a variety of practice working with double-angle and half-angle formulas. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"S.o.s.\n\n
\n
\n
\n
\nMath Medics\n
\n

\nS.o.s. Math: Double Angle and Half Angle Formulas\n

\n
\n\nFor Students\n\n9th - 10th\n
\n
\n
\nDouble angles and half angles are explained through step by step examples. The steps are clear and easy to follow.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Unit Plan
\n
\n
\n
\n\"Regents\n\n
\n
\n
\n
\nOswego City School District\n
\n

\nRegents Exam Prep: Angle Sum & Difference, Double Angle\n

\n
\n\nFor Students\n\n9th - 10th\n
\n
\n
\nThe mathematics session examines angle sum, angle difference, double angle, and half angle formulas. The tutorial includes class notes, examples, and practice problems with solutions. The teacher resource investigates how the formulas...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"Brown\n\n
\n
\n
\n
\nOther\n
\n

\nBrown Math: Remembering Trig Identities\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nFaced with a large number of trigonometric identities, students tend to try to memorize them all. This site the emphasis is on understanding how the functions work and on memorizing only about a half dozen of them - all the others work...\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Unit Plan
\n
\n
\n
\n\"Ck\n\n
\n
\n
\n
\nCK-12 Foundation\n
\n

\nCk 12: Trigonometry: Double Angle Identities\n

\n
\n\nFor Students\n\n10th - 12th\n
\n
\n
\n[Free Registration/Login may be required to access all resource tools.] Derivation of double angle identities for sine, cosine, and tangent.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Handout
\n
\n
\n
\n\"Wolfram\n\n
\n
\n
\n
\nWolfram Research\n
\n

\nWolfram Math World: Trigonometric Addition Formulas\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nThis tutorial offers formulas and explanations on trigonometric addition formulas and features an easy way to remember the sine and cosine addition formulas using matrices.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"S.o.s.\n\n
\n
\n
\n
\nMath Medics\n
\n

\nS.o.s. Math: Table of Trigonometric Identities\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nThis tutorial highlights the numerous trigonometric identites (but does not define the basic trigonometric functions).\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"The\n\n
\n
\n
\n
\nLawrence Hall of Science\n
\n

\nThe Math Page: Trigonometry: Trigonometric Identities\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nThis resource clearly and thoroughly explains the many types of trigonometric identities. There are example problems solved, problems for the student to attempt, and answers to the student problems.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Handout
\n
\n
\n
\n\"Wolfram\n\n
\n
\n
\n
\nWolfram Research\n
\n

\nWolfram Math World: Hyperbolic Functions\n

\n
\n\nFor Students\n\n9th - 10th\n
\n
\n
\nThis site from MathWorld explains the hyperbolic function. The information is not too in-depth, but factual and quite a few links are provided for additional information on related subjects.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"Free\n\n
\n
\n
\n
\nFree Math Help\n
\n

\nFree Math Help: Double and Half Angle Formulas\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nStudents learn about the double and half angle formulas. Definitions and formulas are included.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n
\n\n
\n
\n
\n
Activity
\n
\n
\n
\n\"S.o.s.\n\n
\n
\n
\n
\nMath Medics\n
\n

\nS.o.s. Math: Trigonometry\n

\n
\n\nFor Students\n\n9th - 10th\n\nStandards\n
\n
\n
\nThis lesson is the main SOS Math page for trigonometry. Surf the lesson to find most any trigonometric identity, formula, and many forms of help in the area of trigonometry.\n
\n
\n
\n\nGet Free Access\n\nSee Review\n
\n
\n
\n
\n\n
\n\n\n","pagination":"
\n
\n
\n"}