Solve the Equation on the Interval [0, 2π) $f ( x ) = 2 \cos \theta + 1$

question 194

Multiple Choice

Solve the equation on the interval [0, 2π) .
-Suppose $f ( x ) = 2 \cos \theta + 1$ . Solve $f ( x ) = 0$ .

• A) \(\frac { \pi } { 3 } , \frac { 5 \pi } { 3 }\)
• B) \(\frac { \pi } { 2 } , \frac { 3 \pi } { 2 }\)
• C) \(\frac { 3 \pi } { 2 }\)
• D) \(\frac { 2 \pi } { 3 } , \frac { 4 \pi } { 3 }\)

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