Find the zeros of the function in the interval $ [-2 \pi, 2 \pi] $.
-$$f ( x ) = 5 \cos \frac { x } { 2 }$$
A) $\pm \frac { \pi } { 2 } , \pm \frac { 3 \pi } { 2 }$
B) $\pm \frac { \pi } { 4 } , \pm \frac { 3 \pi } { 4 } , \pm \frac { 5 \pi } { 4 } , \pm \frac { 7 \pi } { 4 }$
C) $\pm \pi$
D) $\pm \pi , \pm 2 \pi$

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The Answer of Find the zeros of the function in the interval $ [-2 \pi, 2 \pi] $.
-$$f ( x ) = 5 \cos \frac { x } { 2 }$$
A) $\pm \frac { \pi } { 2 } , \pm \frac { 3 \pi } { 2 }$
B) $\pm \frac { \pi } { 4 } , \pm \frac { 3 \pi } { 4 } , \pm \frac { 5 \pi } { 4 } , \pm \frac { 7 \pi } { 4 }$
C) $\pm \pi$
D) $\pm \pi , \pm 2 \pi$

Find the Zeros of the Function in the Interval [−2π,2π] [-2 \pi, 2 \pi] [−2π,2π]

Find the Zeros of the Function in the Interval $[-2 \pi, 2 \pi]$