Question

if sin²∅ = cos (∅-30⁰) find the value of ∅​

Answer 1

Step-by-step explanation:

you can change sin2 theetha into 1-cos2 theetha

Answer 2

Answer:

I am taking X in place of theta

Step-by-step explanation:

sin^2x= sin^2{90°-(x-30°)}

sin^2x= sin^2(90°-x+30°)

sin^2x= sin^2(120°-x)

cancel out sin

2x= 120°-x

3x = 120°

X= 40°

check the question once more I think you forget to write square of cos.