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Amazing Consistent Ratios

For Teachers 7th - 9th
Students derive the six trigonometric identities. In this trigonometry instructional activity, students find the ratios of sine, cosine and tangent using the right triangle. They use properties of the Pythagorean Theorem to find the trig...
Worksheet
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Missing Angles

For Students 10th - 11th
In this missing angle worksheet, students use trigonometry ratios to determine the measurement of a missing angle. Students identify sine, cosine and tangent ratios. This one-page worksheet contains ten problems.
Worksheet
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Ten Trigonometric Review Problems - Calculator Required

For Students 11th - Higher Ed
In this trigonometry review worksheet, learners convert between radians and degrees, sketch angles, evaluate trig. functions, solve for missing angles, and find the functions that satisfy the given conditions.
Lesson Plan
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Exploring Trigonometric Ratios

For Teachers 9th - 10th
Students 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...
Worksheet
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Trigonometry Sum and Difference Identities

For Students 9th - 11th
In this algebra instructional activity, students solve a word problem using trigonometric identities. They solve problems about a love triangle. There is an answer key.
Lesson Plan
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Indirect Measurement, Surveying Trigonometry

For Teachers 9th - 10th
Students measure distances using indirect measurements. In this geometry lesson, students apply proportion and ratios to measure heights of different objects. They differentiate between direct and indirect measurements.
Lesson Plan
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Algebra 2 & Trigonometry Practice: Properties of Logarithms #2

For Teachers 9th - 12th
For this logarithm worksheet, students solve 10 multiple choice and short answer problems.  Students simplify logarithmic expressions and expand single logarithms using logarithm properties.
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Algebra 2 & Trigonometry Practice: Properties of Logarithms #4

For Teachers 9th - 12th
In this logarithms worksheet, high schoolers determine if 11 statements are always, sometimes, or never true. Students determine if expressions are always, sometimes, or never true using logarithm properties.
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Exercise Set 5.4: Inverse Trigonometric Functions

For Teachers 9th - 12th
In this trigonometric functions worksheet, high schoolers solve 68 multi-part short answer and graphing questions. Students evaluate inverse trigonometric functions for a given value. High schoolers graph inverse trigonometric functions.
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Unit Circle

For Teachers 11th - 12th
In this Pre-Calculus worksheet, students solve problems involving angles and the unit circle.  The four page worksheet contains a combination of twenty multiple choice and free response problems.  Answers are provided. 
Lesson Plan
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Solving Right Triangles

For Teachers 10th - 11th
Students investigate the basic trigonometric functions.  In this geometry/trigonometry instructional activity, students explore strategies to solve right triangles using basic trigonometric functions.  The instructional...
Worksheet
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Trig Tic-Tac-Times

For Students 11th - 12th
In this trigonometry worksheet, learners 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...
Worksheet
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Using the Law of Sines and the Law of Cosines to Solve Triangles

For Students 10th - 12th
In this trigonometry instructional activity, students apply the Law of Sines and Cosines to solving for missing sides of a triangle. There are 5 questions with an answer key.
Worksheet
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Limits of Trig Functions

For Students 9th - 11th
In this trigonometry worksheet, students solve 14 problems with trig functions by calculating and solving for the limit.
Worksheet
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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.
Worksheet
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Vertical Tower 2

For Students 11th - 12th
For 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. 
Lesson Plan
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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.
Lesson Plan
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Trigonometric Ratios

For Teachers 10th - 12th
Students measure and analyze angles. In this trigonometry instructional activity, students measure angles and distances use non-traditional techniques. They identify the different ratios of sine, cosine and tangent.
Lesson Plan
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Exploring Trigonometric Ratios

For Teachers 10th - 12th
Students calculate the different ratios using a right triangle. In this trigonometry lesson, students identify the sine, cosine and tangent of each side. They find the missing angles using the different ratios.
Worksheet
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Differentiation Rules for Math 21A and Trig Identities

For Students 11th - Higher Ed
In this math worksheet, students read the rules for differentiation and the trigonometry identities. They could apply each one to practice problems.
Worksheet
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Inverse Trigonometric Values

For Students 11th - 12th
In this trigonometry learning exercise, 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.
Lesson Plan
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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...
Worksheet
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Trigonometry Worksheet: Graph Trigonometric Functions (1)

For Students 10th - 12th
In this trigonometry learning exercise, students graph one trigonometric function. The function is y=2cos(2x). A coordinate grid is included on the learning exercise.
Worksheet
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Trigonometry: Labeling, Formulas, Solving

For Students 11th - 12th
In this math activity, students label sides of right triangles as opposite, hypotenuse, and adjacent to the labeled angle. On the second page of the activity, students label the part of the right triangle marked with a question mark and...

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