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sin 10^(@) sin 30^(@) sin 50^(@) sin 70^...

`sin 10^(@) sin 30^(@) sin 50^(@) sin 70^(@) sin 90^(@)=`

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sin 50 ^(@) - sin 70^(@) + sin 10^(@)

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

sin 10^(@) + sin 20^(@) + sin 40^(@) + sin 50^(@) - sin 70^(@) - sin 80^(@) =

Prove that sin10^(@) + sin20^(@) + sin 40^(@) + sin 50^(@) = sin 70^(@) + sin 80^(@)

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

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

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

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

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

Prove that : sin 10^(@) + sin 20^(@) + sin 40^(@) + sin 50^(@) = sin 70^(@) + sin 80^(@).