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Lesson Plan
Curated OER

Trig is SOH Easy!

For Teachers 7th - 10th
Students derive the six trigonometric identities. In this trigonometry instructional activity, students review the parts of a right triangle and use the Pythagorean theorem as a guide to find the trig identities. They find sine, cosine...
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Worksheet
Curated OER

Review of Trigonometry

For Students 9th - 11th
In this review of trigonometry worksheet, students determine the values of angels using sine, cosine, and tangent.  They determine arc length and find the coordinates of endpoints.  This two-page worksheet contains approximately 70...
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Lesson Plan
Curated OER

Right Triangles and Unit Circles

For Teachers 9th - 11th
Students evaluate the six trigonometric values of a trig function. In this trigonometry lesson, students use the Unit Circle to find the values of right triangles and their angles. They identify an angle of elevation and depression.
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Lesson Plan
Curated OER

Exploring Trigonometric Ratios

For Teachers 9th - 10th
Students identify the ratios of trig functions. For this trigonometry lesson, 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 identities.
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Lesson Plan
Curated OER

Trigonometric Graphing

For Teachers 9th - 12th
Students analyze graphs. In this trigonometric lesson, students identify the different graphs of sine, cosine and tangent. They graph the inverse of those trig values and identify their properties such as phase shift and period.
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Lesson Plan
Curated OER

Some More Trigonometry

For Teachers 9th - 10th
Students define the law of cosine and its correct usage. In this trigonometry lesson plan, students define the law of Heron's area formula and use it to solve problems. They review other trigonometric values and identify the identities.
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Lesson Plan
Curated OER

Why We Study Trigonometry

For Teachers 10th - 11th
Students investigate the different properties of trigonometry. In this precalculus lesson, students find the six different identities of trigonometric ratios. They relate the ratios to that of a right triangle and apply it to real life...
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Lesson Plan
Curated OER

Law of Cosines

For Teachers 7th - 9th
Students model scenarios using functions and their properties. In this trigonometry lesson, students calculate the angles of sine, cosine and tangent. They perform operation using a calculator.
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Lesson Plan
Curated OER

Using Trigonometric Ratios

For Teachers 10th - 11th
Students solve problems using sine and cosine. In this trigonometry lesson, students apply the properties of sine and cosine to solve triangular problems. They identify when to use law of sines using angle-side relationships.
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Worksheet
Curated OER

Vertical Tower 2

For Students 11th - 12th
In this trigonometry worksheet, students prove that for the given conditions of the problem that cos y = cos2 x.  The one page worksheet contains one problem with the solution. 
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Worksheet
Curated OER

Using Trigonometry to Find Area

For Students 11th - 12th
In this Algebra II/Trigonometry worksheet, students use trigonometry to determine the area of a triangle or a parallelogram.  The one page worksheet contains ten problems.  Answers are not provided. 
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Worksheet
Curated OER

Trig Tic-Tac-Times

For Students 11th - 12th
In this trigonometry worksheet, students play a skill review game that involves the problem solving strategy of working backward.  The game is similar to tic-tac-toe using the trigonometric ratios.  The one page worksheet provides the...
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Worksheet
Curated OER

Inverse Trigonometric Values

For Students 11th - 12th
In this trigonometry worksheet, students solve functions using the properties of inverse trig. They write out the 6 trigonometric functions in standard position and solve for missing angles. There are 15 questions.
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Worksheet
Curated OER

Vertical Tower

For Students 11th
In this trigonometry worksheet, 11th graders are given a tower built by different angles and asked to prove the sides are true using the theorems of trig angles. There are 3 questions with an answer key.
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Worksheet
Curated OER

Limits of Trig Functions

For Students 9th - 11th
In this trigonometry learning exercise, students solve 14 problems with trig functions by calculating and solving for the limit.
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Worksheet
Curated OER

Using the Law of Sines and the Law of Cosines to Solve Triangles

For Students 10th - 12th
For this trigonometry worksheet, students apply the Law of Sines and Cosines to solving for missing sides of a triangle. There are 5 questions with an answer key.
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Worksheet
Curated OER

Magic Square Trig Identities

For Students 12th
In this trig worksheet, 12th graders review their trig identities using a table. They answer questions 1-16 as given clues to find the answer to the correct identity.
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Worksheet
Curated OER

Trig Card Game (Review of Trig Identities)

For Students 9th - 11th
In this trig card game, students play a card game to form and identify trigonometric identities.  Students collect cards to form identities.  This one-page learning exercise contains instructions for making cards and the rules of the...
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Lesson Plan
Curated OER

Trigonometry Practice: Trigonometric Graphs #3

For Teachers 10th - 12th
In this Trigonometry Practice worksheet, students are asked to graph a variety of trigonometric functions.  A graphing calculator is required to complete these three pages.
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Lesson Plan
Curated OER

Algebra 2/Trigonometry Regents Exam

For Teachers 12th
Twelfth graders test their knowledge of Algebra II and Trigonometry.  In this Algebra II/Trigonometry lesson, 12th graders are provided with a copy of an Algebra II/Trigonometry Regent Exam from the fall of 2009.  The exam has questions...
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Lesson Plan
Curated OER

Sine

For Teachers 10th - 12th
In this sine worksheet, students use the trigonometry equation to find the sine of triangles. Students solve the sine for 10 triangle problems.
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Lesson Plan
Curated OER

Roll It! Creating an Entrance Ramp

For Teachers 9th - 12th
Young scholars explore the concept of triangles.  In this triangles lesson, students are to propose a plan for a ramp at their school.  Young scholars use the Pythagorean Theorem and trigonometry to determine the length, height, and...
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Worksheet
Curated OER

8-5 Reteaching Worksheet. Using Trigonometry

For Students 11th - 12th
In this using trigonometry worksheet, learners solve story problems based on finding the angle of elevation and angle of depression. This two-page worksheet contains ten trigonometry angle problems.
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Lesson Plan
Curated OER

Properties of Trigonometric Functions

For Teachers Higher Ed
In this properties of trigonometric functions worksheet, pupils complete 4 sections consisting of 15 problems involving problem solving using Pythagorean and trigonometric identities and sketching functions..