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" (xii) "sin1845^(@)...

" (xii) "sin1845^(@)

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Find the values of the following trigonometric ratio: sin1845^(@)

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

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

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

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^(@).

Prove that sin 12^(@) sin18^(@)sin42^(@) sin48^(@) sin 72^(@) sin78^(@)=(cos18^(@))/(32) .

Prove that sin 12^(@) sin18^(@)sin42^(@) sin48^(@) sin 72^(@) sin78^(@)=(cos18^(@))/(32) .

Prove that sin 12^(@) sin18^(@)sin42^(@) sin48^(@) sin 72^(@) sin78^(@)=(cos18^(@))/(32) .

Find the values of the following trigonometric ratio: sin1845^0