# How do I find the phase shift of a sinusoidal graph?

##### 1 Answer

Jun 19, 2015

#### Answer:

Find the value of

#### Explanation:

Examples:

Solve:

#3x-pi/4 = 0# So

#x= pi/12# is the shift.

Solve:

#4x + pi/2 = 0# So

#x= -pi/8# is the shift.

Solve:

#pix + (3pi)/4 = 0# So

#x= -3/4# is the shift.

Some textbooks use:

Other textbooks use:

For me (having taught out of both kinds of textbook), it's easier just to solve the equation.