Question

if sin theta + cos theta = 0 and theta lies in the fourth quadrant. find sin theta and cos theta

Answer 1

Answer:   pi/4

Step-by-step explanation:

As cos theta plus sin theta is 0

Cos theta and sin theta should have same values with different sign

So theta should be in 1st or 4th quadrant i.e it should be pi-pi/4 or 2pi-pi/4

So the answer is 2pi-pi/4 i.e- pi/4