posted by matt .
I have y=5sin(4x-pie/2). I need too find phase shift. I know c/b is shift. This is pie2/4=.392, but does not equal my answer and I don't know direction it should go. Can anyone help?
What do you mean by c/b? What do you mean by pie2/4=.392? What phase shift are you trying to achieve?
My book says c/b = the phase shift, as in y=a sin(bx - c). The question just says find the phase shift of the function.
OK, then PI/8 is the phase shift. c/b
3.14/8=.392 that is in radians. In degrees, it is 70.6 deg.