Question

Find angle 180 < © <360 for which sin©=cos©.
note: © is theta​

Answer 1

Answer:

theta = 225

Step-by-step explanation:

sin theta = cos theta and 180<theta<360 is only possible in third quadrant .

We know , sin 45 = cos 45

But in quadrant 3 , angle = 180 + 45 = 225

therefore sin 225 = cos 225 = 1/root 2