Find the exact solution to the equation without a calculator.
-$$\cos ^ { - 1 } ( \cos x ) = \frac { 1 } { 4 }$$
A) $\frac { 1 } { 4 }$
B) $\frac { 1 } { 8 }$
C) 4
D) 0

Question

Quizplus · Accepted Answer

The equation $\cos ^ { - 1 } ( \cos x ) = \frac { 1 } { 4 }$ simplifies directly to $x = \frac { 1 } { 4 }$, assuming $x$ is in the domain of the inverse cosine function, which is $[0, \pi]$ for real numbers.

Find the Exact Solution to the Equation Without a Calculator cos⁡−1(cos⁡x)=14\cos ^ { - 1 } ( \cos x ) = \frac { 1 } { 4 }cos−1(cosx)=41​

Find the Exact Solution to the Equation Without a Calculator $\cos ^ { - 1 } ( \cos x ) = \frac { 1 } { 4 }$