" 4.Prove "sin10^(@)sin30^(@)sin50^(@)sin70^(@)=(1)/(16)

(i) sin10^(@)sin50^(@)sin70^(@)

Prove that sin10^(@)sin30^(@)sin50^(@)sin70^(@)=1//16 .

sin10^(@)sin50^(@)sin60^(@)sin70^(@)=(sqrt(3))/(16)

value of sin10^(@)sin30^(@)sin50^(@)sin70^(@)

Prove that: sin10^(0)sin30^(0)sin50^(@)sin70^(@)=(1)/(16)

Prove the following: (i) "sin" 10^(@) sin 50^(@) sin 70^(@)=(1)/(8) (ii) "sin" 10^(@) sin 30^(@) sin 50^(@) sin 70^(@)=(1)/(16)

sin10^(@)sin30^(@)sin50^(@)sin70^(@)sin90^(@)=

sin50^(@)-sin70^(@)+sin10^(@)=?

Find 1-sin10^(@)sin50^(@)sin70^(@) .