Question

If Sin2theta = Cos(theta- 30°
),then Find the value of theta

Answer 1

Answer:

here value of the tha is 40°

Step-by-step explanation:

explanation is in attachment

Answer 2

lhs

sin²thetha = cos² ( 90- thetha )

cos × cos ( 90-theta ) = cos (theta - 30 )

cos ( 90- theta ) = theta - 30