2. Verify the identity secx - cos x = sin x tan x 3. Find the exact value of sin(2) using the sum and difference formulas. 4. Find the exact value of sin(80°) cos(35°) - cos(80°) sin(35°) 5. Prove the identity 1 + cos2x + 2 sin²x = 2
2. Verify the identity secx - cos x = sin x tan x 3. Find the exact value of sin(2) using the sum and difference formulas. 4. Find the exact value of sin(80°) cos(35°) - cos(80°) sin(35°) 5. Prove the identity 1 + cos2x + 2 sin²x = 2
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 68E
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