Trigonometric Identities Teacher Resources
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EngageNY Algebra II: Module 2
10th - 12th CCSS: Adaptable
Building on young mathematicians' prior knowledge of geometry and algebraic functions, this 17-lesson unit introduces the topic of trigonometric ratios. Starting with the basic definitions of sine, cosine, and tangent, students move on to investigate the graphs of these functions and their use in modeling real-world situations.
Indirect Measurement Technique: Using Trigonometric Ratios
9th - 12th
Students explore the concept of trigonometric ratios. In this trigonometric ratios lesson, students use trigonometric ratios and the angle of elevation/depression to determine the height of an object. Students use their clinometer made...
Section 8-6: Solving Problems Using Trigonometric Ratios
9th - 12th
For this trigonometric ratios worksheet, students solve 20 short answer and multiple choice problems. Students use trigonometric ratios, the angle of depression, and angle of elevation to find missing side lengths of angles of a triangle.
Trigonometric Ratios and the Pythagorean Theorem
9th - 12th CCSS: Designed
Take an alternative route with trigonometry and let learners connect a tweaked version of the pythagorean theorem to the original in terms of triangle sides. The assignment leads participants towards deriving the Pythagorean identity...
Trig Identities Part 3 (Part 5 if you watch the proofs)
9 mins 10th - 12th
Sal 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...
Right Triangle Trigonometry: Evaluating Trigonometric Ratios
10th - 12th
In this right triangle trigonometry worksheet, students use trigonometric ratios to determine the length of a missing side of a triangle or to find a specified angle measurement. This four-page worksheet contains 32 problems. Answers are...