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" (c) "cos18^(@)-sin18^(@)=sqrt(2)sin27^...

" (c) "cos18^(@)-sin18^(@)=sqrt(2)sin27^(@)

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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(n)sin27^(@) , then n=

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

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

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

Prove that: cos18^0-sin 18^0=sqrt(2)sin27^0