Thread: equivalent sin and cos functions

determine an equivalent sine function for the cosine function.
y=-cos2(x-pi/12)

determine an equivalent cosine function for each sine function
y=2sin4(x+pi)

thank you

Originally Posted by johett

determine an equivalent sine function for the cosine function.
y=-cos2(x-pi/12)

use the fact that

determine an equivalent cosine function for each sine function
y=2sin4(x+pi)

use the fact that