sin51^(@)+cos81^(@)=cos21^(@)

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Prove that: "sin"51^(@)+cos81^(@)=cos21^(@) .

"sin" 51^(@)+cos 81^(@)=cos 21^(@) .

Prove that :sin51^(0)+cos81^(0)=cos21^(0)

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

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

value of (5sin75^(@)sin77^(@)+2cos13^(@)cos15^(@))/(cos15^(@)sin77^(@))-(7sin81^(@))/(cos9^(@)) is

Find the value of (5sin75^(@)sin77^(@)+2cos13^(@)cos15^(@))/(cos15^(@)sin77^(@))-(7sin81^(@))/(cos9^(@))

Prove the following : sin 51^@ + cos 81^@ = cos 21^@ .

Value of (2sin9^(@)sin 21^(@)sin 39^(@)sin 51^(@)cos21^(@)sin 81^(@))/(sin54^(@)) is equal to:-