Solved

Use a Calculator to Find the Approximate Value $\cos ^ { - 1 } ( - 0.9397 )$

Question 158

Multiple Choice

Use a calculator to find the approximate value. Express your answer in degrees rounded to two decimal places.
- $\cos ^ { - 1 } ( - 0.9397 )$

A) $157 ^ { \circ }$
B) $160 ^ { \circ }$
C) $- 20 ^ { \circ }$
D) $162 ^ { \circ }$

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