Find the exact value of the composition.
-$\arccos \left( \cos \frac { \pi } { 2 } \right)$
A) $\frac { \pi } { 2 }$
B) $\pi$
C) 0
D) $\frac { \pi } { 3 }$

Name: Find the exact value of the composition. -$\arccos \left( \cos \frac { \pi } { 2 } \right)$ A) $\frac { \pi } { 2 }$ B) $\pi$ C) 0 D) $\frac { \pi } { 3 }$
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Question

Quizplus · Accepted Answer

The cosine of $\frac{\pi}{2}$ is 0, and $\arccos(0)$ is $\frac{\pi}{2}$ since $\arccos$ returns the angle in the range $[0, \pi]$ whose cosine is the given value.

Find the Exact Value of the Composition arccos⁡(cos⁡π2)\arccos \left( \cos \frac { \pi } { 2 } \right)arccos(cos2π​)

Find the Exact Value of the Composition $\arccos \left( \cos \frac { \pi } { 2 } \right)$