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Use a Calculator to Give the Real Number Value $\mathrm { y } = \cos ^ { - 1 } ( - 0.3907 )$

Question 82

Question 82

Multiple Choice

Use a calculator to give the real number value. Round the answer to 7 decimal places.
- $\mathrm { y } = \cos ^ { - 1 } ( - 0.3907 )$

A) $- 1.1698423$
B) $2.0079383$
C) $1.9206367$
D) $1.9721882$

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