Question

find sin60 by using formula sin20=2sinthetacostheta​

Answer 1

Answer:

sin 2x = 2 sin x cos x

sin 60° = 2×30°

=> sin (2×30°) = 2 sin 30° cos 30°

=> sin 60° = 2 ×1/2×√3/2

=> √3/2

Answer 2

Answer:

answer is your question