Question

Which graph represents a phase shift of pi/2 units right for the graph of y=sinx?

Answer 1

You have no pictures of graphs

Answer 2

that would be -cos(x)

Answer 3

y=sin(x-pi/2)
y=secx
cscx
cosx

Answer 4

Well.

Answer 5

Since you obviously can't do trig identities, let's have some fun!

Answer 6

sin(-x)=-sin(x)

Answer 7

sin(x+y)=sinxcosy+sinycosx

Answer 8

Now, x=x, -pi/2=y

Answer 9

also, cos(-x)=cos(x)

Answer 10

ok.
sin(x-pi/2)
sin(x-90) -> convert to degrees because i'm a noob
sin(x-90)=sinxcos(-90)+sin(-90)cos(x)
=sinx*0-1*cos(x)
=-cos(x)

Answer 11

Did you see what I did there? I gave youthe answer, and showed you why my answer was the same.

Answer 12

thank u so much!!!

Answer 13

But, in general, a phase shift in a graph is represented by sin(x-theta), or cos(x-theta).

Answer 14

Which of the following is a sinusoid?

a) y= [x]
b) y = 3 sqr x
c) x^2 + y^2 = 1
d) y=cosx

Answer 15

The answer to the second question was D.