Prove that : `cos36^@gttan36^@`

Prove that: cos36^(@)cos72^(@)cos108^(@)cos144^(@)=(1)/(16)

Statement-1: cos36^(@)gttan36^(@) Statement-2: cos36^(@)gtsin36^(@)

Prove that (sin36^(@)+cos36^(@))/(cos54^(@)+sin54^(@))=1

Prove that: cos36^(@)=(sqrt(5)+1)/(4)

Prove that cos 36^(@) cos 72^(@) cos 108^(@) cos 144^(@)=1//16 .

Prove that: i) tan36^(@)+tan9^(@)+tan36^(@)tan9^(@)=1

Prove that (1)cos36^(@)cos72^(@)cos108^(@)cos144^(@)=(1)/(16)(2) Show that 4sin27^(@)=sqrt(5+sqrt(5))-sqrt(3-sqrt(5))

Evaluate: cos36^(@)

Prove that cos36^(@)cos72^(0)cos108^(0)cos144^(0)=(1)/(16)

Prove that 4cos12^(@)cos48^(@)cos72^(@)=cos36^(@)