Solve the Problem $y = - \frac { 1 } { 2 } \cos ( 2 x - 2 \pi$

Solve the problem.
-For the equation $y = - \frac { 1 } { 2 } \cos ( 2 x - 2 \pi$ ) , identify (i) the amplitude, (ii) the phase shift, and (iii) the period.

A) (i) $\frac { 1 } { 2 }$
(ii) $\pi$
(iii) $\pi$

B) (i) $\frac { 1 } { 2 }$
(ii) $\frac { \pi } { 2 }$
(iii) $\pi$

C) (i) 2
(ii) $\pi$
(iii) $\pi$

D) (i) 2
(ii) $2 \pi$
(iii) $2 \pi$

Correct Answer:

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