Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 3 - Test - Page 172: 3



Work Step by Step

Step 1: Ensure that the calculator is in degrees. Step 2: $\cot 320^{\circ}=\frac{1}{\tan 320^{\circ}}$ Step 3: Type $\frac{1}{\tan 320^{\circ}}$ into the calculator and press enter. Step 4: Rounding out the answer to 4 decimal places, $\frac{1}{\tan 320^{\circ}}\approx-0.8391$.
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