Find the amplitude and period of the graph of y=7cos (30+pi/6)

Use the form

a

sin

(

b

x

-

c

)

+

d

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

a

=

1

b

=

1

c

=

π

6

d

=

0

Find the amplitude

|

a

|

.

Amplitude:

1

Find the period using the formula

2

π

|

b

|

.