Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 5 - Review Exercises - Page 248: 20


$$-\sin35^\circ=\sin(-35^\circ)$$ 20 goes with A.

Work Step by Step

$$-\sin35^\circ$$ Recall the negative-angle identities for sines: $$\sin(-\theta)=-\sin\theta$$ Therefore, we can rewrite $-\sin35^\circ$ as follows: $$-\sin35^\circ=\sin(-35^\circ)$$ Looking at the choices, we see that 20 is matched with A.
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