cos66^(@)+sin84^(@)=

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cos66^(0)+sin84^(0)=(sqrt(15)+sqrt(3))/(K) then K=

sin6^(@)sin42^(@)sin66^(@)sin78^(@)=

cos 66^(@) + sin 84^(@) =

cos6^(@) cos42^(@) cos66^(@) cos78^(@) =

cos12^(@)+cos60^(@)+cos84^(@)=cos24^(@)+cos48

What is the values of the following? ( sin 24^(@) +cos 66^(@)) (sin 24^(@) -cos66^(@))

(The24^(@)cos6^(@)-sin6^(@)sin66^(@))/(sin21^(@)cos39^(@)-cos51^(@)sin69^(@)) is

The value of (sin24^(@)cos6^(@)-sin6^(@)sin66^(@))/(sin21^(@)cos39^(@)-cos51^(@)sin69^(@)) is