" 4.If "sin18^(@)=(sqrt(5)-1)/(4)," then "sin81^(@)=

If sin18^(@)=(sqrt5-1)/4 then Sin81^(@)=

Prove that: sin18^(0)=(sqrt(5)-1)/(4)

If sin18^(@)=(sqrt(5)-1)/(4) then what is the value of sin81^(@)

Statement -1: If xin[-1//sqrt(3),1//sqrt(3)] then cot^(-1)((3x-x^(3))/(1-3x^(2)))=cos^(-1)((1-x^(2))/(1+x^(2)))rarrx=sqrt(25-10sqrt(5))/(5) statement -2: sin18^(@)=sqrt(5-1)/(4) and cos18^(@)=sqrt(10+2sqrt(5))/4

Prove that: sin18^0=(sqrt(5)-1)/4 .

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

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

sin18^(0)= ( sqrt(5)-1)/4 , then what is the value of sin 81