Find the exact solution of the equation.
-$\cos ^ { - 1 } x = 0$
A) $x = - 1$
B) $x = \pi$
C) $x = 1$
D) $x = 0$

Name: Find the exact solution of the equation. -$\cos ^ { - 1 } x = 0$ A) $x = - 1$ B) $x = \pi$ C) $x = 1$ D) $x = 0$
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Question

Quizplus · Accepted Answer

The equation $\cos^{-1} x = 0$ means we are looking for a value of $x$ such that the cosine of some angle equals $x$ and that angle is 0 radians. The cosine of 0 radians is 1, so $x = 1$.

Find the Exact Solution of the Equation cos⁡−1x=0\cos ^ { - 1 } x = 0cos−1x=0

Find the Exact Solution of the Equation $\cos ^ { - 1 } x = 0$