Answer
$1$
Work Step by Step
For every angle $\theta$
$\sin ^{2}\theta +\cos ^{2}\theta =1$
So value of $\sin ^{2}\theta +\cos ^{2}\theta$ Does not depend on anything (so doesn’t depend on $tan\theta$)
So the answer will be $1$
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 6 - Review - Exercises - Page 529: 59
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