Question 724720
solve the equation on the interval 0 < or equal to theta < 2 pi.
tan theta = cot theta
This is true for theta = &#960;/4, 3&#960;/4, 5&#960;/4, 7&#960;/4
At &#960;/4 and 5&#960;/4, tan theta=cot theta=1
At 3&#960;/4 and 7&#960;/4, tan theta=cot theta=-1