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सिद्ध कीजिय की sin 40^@ + sin 20^@ - sin...

सिद्ध कीजिय की `sin 40^@ + sin 20^@ - sin 80^@ = 0`

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sin 40^(@) - sin 80^(@)+ sin 160^(@) =

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

sin 20^(@) * sin 40^(@) * sin 60^@ * sin 80^(@) =

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

Prove the following : sin 10^@ + sin 20^@ + sin 40^@ + sin 50^@ = sin 70^@+ sin 80^@ .

Prove the following : sin 20^@ sin 40^@ sin 60^@ sin 80^@ = 3/16 .

Sin40^(@) - Sin80^(@) + Sin160^(@) =

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

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