# Find Amplitude, Period, and Phase Shift y equals three cos(zero point five(x plus pi))

Use the form to find the variables used to find the amplitude, period, phase shift, and vertical shift.

Calculate the amplitude .

Amplitude:

Evaluate the period of function using .

Period:

Replace with in the formula for period.

Period:

Find solution to the equation.

The absolute value is the distance between a number and zero. The distance between and is .

Period:

Replace with an approximation.

Period:

First, First, multiply by .

Period:

First, divide by .

Period:

Period:

Period:

The phase shift of the function can be calculated from .

Phase Shift:

Replace the values of and in the equation for phase shift.

Phase Shift:

Divide by .

Phase Shift:

Phase Shift:

Find the vertical shift .

Vertical Shift:

List the properties of the trigonometric function.

Amplitude:

Period:

Phase Shift: ( to the left)

Vertical Shift:

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