Which equation can be used to determine the reference angle, r, if theta=7pi/12?

r = 180° -

Step-by-step explanation:

We have to find the reference angle (r) of the given angle θ =

First we will find the quadrant in which this angle lies.

Since θ = =

105° angle lies in second quadrant. Therefore, reference angle will be

r = 180° - θ

where θ =

Now we can say that equation for reference angle r will be r = 180°-

yes   because as the functions are graphed they eventually will intersect unless otherwise

step-by-step explanation: