Select the functions that have identical graphs.
-(i) $y = \cos x$
(ii) $y = - \sin ( x - \pi )$
(iii) $y = \cos \left( x - \frac { \pi } { 2 } \right)$
A) $\mathrm { i }$ and iii
B) $i$ and ii
C) ii and iii
D) $i$, ii and iii

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The Answer of Select the functions that have identical graphs.
-(i) $y = \cos x$
(ii) $y = - \sin ( x - \pi )$
(iii) $y = \cos \left( x - \frac { \pi } { 2 } \right)$
A) $\mathrm { i }$ and iii
B) $i$ and ii
C) ii and iii
D) $i$, ii and iii

Select the Functions That Have Identical Graphs y=cos⁡xy = \cos xy=cosx

Select the Functions That Have Identical Graphs $y = \cos x$