Posted by Nora on .
Given theta is in the standard position and is in the first quadrant , if the terminal side of the angle theta is parallel to the line y=x+4 on ,find the measure of theta in degrees.

trig 
bobpursley,
slope is 1 on the line, so tanTheta=1
theta=arctan1=45 degrees 
trig 
Nora,
Thank you!