Use a calculator to find the value. Give answers as real numbers and round to 4 decimal places, if necessary.
-$\cos \left( \cos ^ { - 1 } ( - 0.9372 ) \right)$
A) $0.9372$
B) $- 0.9372$
C) $- 0.4686$
D) $0 \quad .4686$

Question

Quizplus · Accepted Answer

The expression $\cos(\cos^{-1}(-0.9372))$ simplifies directly to $-0.9372$ because the cosine inverse function, $\cos^{-1}$, returns the angle whose cosine is $-0.9372$, and then taking the cosine of this angle gives back the original value, $-0.9372$.

Use a Calculator to Find the Value cos⁡(cos⁡−1(−0.9372))\cos \left( \cos ^ { - 1 } ( - 0.9372 ) \right)cos(cos−1(−0.9372))

Use a Calculator to Find the Value $\cos \left( \cos ^ { - 1 } ( - 0.9372 ) \right)$