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Trigonometry Identities
laura_yurilaura_yuri

Trigonometry Identities

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This worksheet focuses on trigonometric identities involving expressions of the form: 180° ± x 360° ± x 540° ± x 90° − x Students are given a trigonometric function in terms of k (e.g., tan x = k), and are required to: Apply identities to find the equivalent value for angles like 180° - x, 360° - x, etc. (SATC) Use Pythagorean identities and trigonometric ratios to derive expressions for sin x, cos x, or tan x in terms of k. There are 15 sets of questions, each with 3 sub-questions. Answer keys are provided at the end.
Exact Trig Values (Special Angles)
laura_yurilaura_yuri

Exact Trig Values (Special Angles)

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Trigonometry Challenge: Evaluate Without Calculator (Sine, Cosine & Tangent) Examples: sin 210° = −1/2 cos 315° = √2/2 tan 135° = −1 sin 330° = −1/2 cos 225° = −√2/2 Answer Key included. A practice worksheet for mastering exact trigonometric values using reference angles and ASTC quadrant rules. 30 questions each on sin, cos, and tan Angles between 0° and 540° Questions designed to strengthen understanding of acute angle reduction, unit circle identities, and special angles (30°, 45°, 60°)