Question

sin 20.sin40.sin60.sin80=3/16
prove it.​

Answer 1

Answer:

please refer above attachment for answer

Answer 2

Answer:

sin20.sin40.sin60.sin80

Step-by-step explanation:

sin 60[sin20 .sin40 .sin80]

√3/2[sin20 .sin(60-20) .sin(60+20)]

√3/2[sin3 (20)/4]

√3/2[ sin60/4]

√3/2 [√3 /2*4]

√3/2*√3/8

3/16