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"sin" 10^(@)+"sin" 20^(@)+"sin" 40^(@)+"...

`"sin" 10^(@)+"sin" 20^(@)+"sin" 40^(@)+"sin" 50^(@)="sin" 70^(@)+"sin" 80^(@)`.

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Explore conceptually related problems

sin 20^(@) sin 40^(@) sin 60^(@) sin 80^(@) =(3)/(16)

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

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

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

The value of sin 10^(@) sin 30^(@) sin 50^(@) sin 70^(@) is

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

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

sin 10^(@)+sin 20^(@) + sin 40 ^(@) + sin 50 = A) sin 15^(@) +sin 75^(@) B) cos 15^(@) + cos75^(@) C) sin 70^(@) + sin 80^(@) D) cos 70^(@) + cos 80^(@)

sin20^(@)+sin40^(@)-sin80^(@)=