Answer
$2$
Work Step by Step
Solve. $1+\sin^2 40^{\circ}+\sin^2 50^{\circ}$
We have
$= 1+\sin^2 (90^{\circ}-50^{\circ})+\sin^2 50^{\circ}$
or, $=1+\cos^2 50^{\circ}+\sin^2 50^{\circ}$
or, $=1+1$
or, $=2$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 4 - Section 4.3 - Right Triangle Trigonometry - Exercise Set - Page 561: 45
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
