SOLUTION: Please help Rewrite r(t) = -4 sin (5t + pi/2) + 7 as, v(t), a function of cosine V(t)=______

SOLUTION: Please help Rewrite r(t) = -4 sin (5t + pi/2) + 7 as, v(t), a function of cosine V(t)=_______

Question 1115325: Please help
Rewrite r(t) = -4 sin (5t + pi/2) + 7 as, v(t), a function of cosine
V(t)=_______
Answer by greenestamps(13208) (Show Source): You can put this solution on YOUR website!

A cosine function shifted one-quarter period to the right is the same as a sine function:

So the given function

is the same as the function

There are of course an infinite number of equivalent functions using either sine or cosine.

For example, a cosine function shifted a quarter period to the left is the same as a negative sine function:

So another cosine function equivalent to the given sine function is

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