Find the Exact Solution of the Equation $2 \cos ^ { - 1 } x = \pi$

question 130

Multiple Choice

Find the exact solution of the equation.
- $2 \cos ^ { - 1 } x = \pi$

• A) \(x = 0\)
• B) \(x = 1\)
• C) \(x = \frac { 3 \pi } { 2 }\)
• D) \(x = \frac { \pi } { 2 }\)

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