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" (vii) "sin18^(@)+cos18^(@)=sqrt(2)cos2...

" (vii) "sin18^(@)+cos18^(@)=sqrt(2)cos27^(@)

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Prove that sin18^(@)+cos18^(@)= sqrt2 cos 27^(@)

Prove that cos18^(@)-sin18^(@)=sqrt(2)sin27^(@) .

Prove that, cos18^(@)-sin18^(@)=sqrt(2)sin27^(@)

Prove that cos 18^(@)-sin 18^(@)=sqrt(2)sin 27^(@)

Prove that cos 18^(@)-sin 18^(@)=sqrt(2)sin 27^(@)

Prove that cos 18^(@)-sin 18^(@)=sqrt(2)sin 27^(@)

If cos18^(@)-sin18^(@)=sqrt(x)sin27^(@) , then x=

If cos18^(@)-sin18^(@)=sqrt(n)sin27^(@) , then n=

Prove that: cos18^(@)-sin18^(0)=sqrt(2)sin27^(0)

Prove that: cos18^(@)-sin18^(0)=sqrt(2)sin27^(0)