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

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

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

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

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

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

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

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

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

Let P=sin 25^(@) sin 35^(@)sin 60^(@) sin 85^(@) and Q=sin20^(@)sin40^(@)sin 75^(@) sin 80^(@) . Which of the following relation (s) is (are) correct ?

Let P=sin 25^(@) sin 35^(@)sin 60^(@) sin 85^(@) and Q=sin20^(@)sin40^(@)sin 75^(@) sin 80^(@) . Which of the following relation (s) is (are) correct ?

Let P=sin 25^(@) sin 35^(@)sin 60^(@) sin 85^(@) and Q=sin20^(@)sin40^(@)sin 75^(@) sin 80^(@) . Which of the following relation (s) is (are) correct ?