Question

if 2 cos 3 theta=1 then find the value of theta​

Answer 1

Step-by-step explanation:

2cos3 theta=1

Cos 3theta=1/2

Since cos 60°=1/2

Therefore cos 3theta=cos 60°

Theta=20°

Answer 2

Answer:

20°

Step-by-step explanation:

2cos3 theta=1

Cos 3theta=1/2

Since cos 60°=1/2

Therefore cos 3theta=cos 60°

Theta=20°