The required shift is pi/2 units left. option a) is correct
y = cosine (x + pi/2)
y = cos(x)
What is graph?
The graph is a demonstration of curves which gives the relationship between x and y axis.
The phase difference between both the curve is
Ф = (x-pie/2)-x
Ф = -pie/2
the negative sign shows that graph shift toward left.
Thus, The required shift is pi/2 units left.
Learn more about graphs here:
brainly.com/question/16608196
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