Which of the following expressions are identities and which are equations? (a) cos2x = 2 sin * cos x (b) tan 2x 2 tan a 1+tan² x (c) tan x-cot x = -2 cot (2 x)
Which of the following expressions are identities and which are equations? (a) cos2x = 2 sin * cos x (b) tan 2x 2 tan a 1+tan² x (c) tan x-cot x = -2 cot (2 x)
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.6: The Inverse Trigonometric Functions
Problem 24E
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please write whether each is an identity or equation. no need to solve
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