Trigonometry (11th Edition) Clone

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

Chapter 8 - Review Exercises - Page 409: 1



Work Step by Step

Step 1: $\sqrt (-9)$ Step 2: $\sqrt (-1\times9)$ Step 3: $\sqrt -1\times\sqrt 9$ Step 4: As $i=\sqrt -1$, the expression becomes $i\times3$ or $3i$
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