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4. sin x - cos x - sin x + cos x 2 tan x = 2 sin ²x - 1 1 + 2 sin x cos x cocx + cin x

4. sin x - cos x - sin x + cos x 2 tan x = 2 sin ²x - 1 1 + 2 sin x cos x cocx + cin x

Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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prove the given identities

4. 5. sin x COS X sin x + cos x 2 tan x 1tan²x + 2 sin ²x 1 1 + 2 sin x cos x 1 cos²x - 1 = cos x + sin x cosx – sin x
Transcribed Image Text:4. 5. sin x COS X sin x + cos x 2 tan x 1tan²x + 2 sin ²x 1 1 + 2 sin x cos x 1 cos²x - 1 = cos x + sin x cosx – sin x
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