Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 5 - Section 5.2 - Sum and Difference Formulas - Exercise Set - Page 671: 94

Answer

The given statement makes sense.

Work Step by Step

The given statement makes complete sense and this can be explained with the help of the example: $\begin{align} & \sin \left( x+y \right)=\sin x\cos y+\cos x\sin y\ne \sin x+\sin y \\ & \cos \left( x+y \right)=\cos x\cos y-\sin x\sin y\ne \cos x+\cos y \\ & \tan \left( x+y \right)=\frac{\tan x+\tan y}{1-\tan x\tan y}\ne \tan x+\tan y \\ \end{align}$ Thus, given statement makes complete sense.
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