Question

if 2(cos2theta- sin2theta)=1,theta is a positive angle then find cot theta.​

Answer 1

Answer:

then cot theta is equal to +sin theta

Answer 2

Step-by-step explanation:

cos^2theta - sin^2 theta = 1/2

divide both sides by sin^2theta

cot^2theta + 1 = 1/2cosec^2 theta

2( cot ^2 theta +1) = cosec^2theta

2cot^2theta + 2 = cosec^2theta

{ cosec^2theta = 1+ cot^2theta }

cot^2 theta = -1