Question

Which graph represents a phase shift of pi/2 units right for the graph of y=cos(x)?

a) y=cos(x+pi/2)
b) y=sin(x)
c) y=sec(x)
d) y=csc(x)

Answer 1

@JackJordan

Answer 2

type so i can medal u!

Answer 3

See a phase shift of pi/2 right for cos(x)
is same as cos(x - pi/2)
which is the same as shifting a cos graph left for pi/2 if you remember the relationship between cos and sin... so what does that tell you?