Find the exact function value.
-$\cos ^ { - 1 } ( 1 )$
A) 1
B) $\frac { \pi } { 4 }$
C) $\frac { \pi } { 2 }$
D) 0

Name: Find the exact function value. -$\cos ^ { - 1 } ( 1 )$ A) 1 B) $\frac { \pi } { 4 }$ C) $\frac { \pi } { 2 }$ D) 0
Brand: Quizplus
Rating: 4.8 (37 reviews)

Question

Quizplus · Accepted Answer

The cosine inverse of 1, denoted as $\cos^{-1}(1)$, equals 0 because the angle whose cosine is 1 is 0 radians (or 0 degrees), which corresponds to the angle where the unit circle intersects the positive x-axis.

Find the Exact Function Value cos⁡−1(1)\cos ^ { - 1 } ( 1 )cos−1(1)

Find the Exact Function Value $\cos ^ { - 1 } ( 1 )$