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" (1) "cos18^(@)-sin18^(@)...

" (1) "cos18^(@)-sin18^(@)

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

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

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

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

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

If cos 18^(@) - sin 18^(@) = k sin 27^(@) , then k =

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

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

If cos18^(@)-sin18^(@)=sqrt(2)sinA . Then value of tan5A+cot5A+sin5A+cos5A is :

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