how to find the phase shift of a trigonometric graph
In the form
y = trig function (Bx + C)
Factor out B
y = trig function B( x + C/B )
Set x + C/B = 0 and solve for X
Example
sin ( 3x - pi )
sin 3(x - pi/3)
Set
x + pi/3 = 0
x = -pi/3 this is the phase shift
