`sin 20^0sin40^0sin60^0sin80^0=3/16`

sin20^(0)sin40^(0)sin60^(0)sin80^(@)=(3)/(16)

sin20sin40sin80

Prove that: sin20^(0)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

The value of sin20^@ sin40^@ sin60^@ sin80^@

Prove that: sin20^(@)sin40^(0)sin60^(@)sin80^(@)=(3)/(16)

Prove that: i) sin20^(@)sin40^(@)sin60^(@)sin80^(@)=3/16 ii) sin10^(@)sin50^(@)sin60^(@)sin70^(@)=sqrt(3)/16 iii) sin20^(@)sin40^(@)sin80^(@)=sqrt(3)/8

Find sin20^(@)sin40^(@)sin60^(@)sin80^(@) .

sin20^(@)sin40^(@)sin60^(@)sin80^(@)

prove that sin10^(0)+sin20^(0)+sin40^(@)+sin50^(0)=sin70^(0)+sin80^(@)