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: 19



Work Step by Step

Since $i^{4}=1$, we write the given power as a product involving $i^{4}$: $i^{53}=i^{52}\times i=(i^{4})^{13}\times i=(1)^{13}\times i=1\times i=i$
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