Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 7 - Trigonometric Identities and Equations - Summary Exercises Verifying Trigonometric Identities - Exercises: 24

Answer

$2\cos ^{2}\dfrac {x}{2}\tan x=\tan x+\sin x$

Work Step by Step

$2\cos ^{2}\dfrac {x}{2}\tan x=2\times \dfrac {\left( 1+\cos x\right) }{2}\tan x=\left( 1+\cos x\right) \tan x=\tan x+\sin x$
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