sin18^(0)

A=tan 15^(0)+cot15^(0),B= tan 22(1^(0))/(2)+cot 22(1^(0))/(2) and C= sin 54^(0)-sin 18^(0) then the ascending order of A,B C is

The area of the triangle formed by the lines x=0y=0 and x sin18^(@)+y cos36^(@)+1=0 is

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

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

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

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

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

The value of sin18^(@) is

cos72^(@)-sin18^(@)= ________