Question

if cot theta is equal to tan theta then find cos2theta​

Answer 1

Answer:

0

Step-by-step explanation:

when Cot theta is equal to tan theta

cos theta/sin theta = sin theta/cos theta

cos² theta = sin² theta

we also know that cos2theta is equal to cos² theta - sin² theta

==>cos² theta - sin² theta = cos² theta - cos² theta = 0.