Home
Class 11
MATHS
cos36^(@)cos72^(@)cos108^(@)cos144^(@)=...

cos36^(@)cos72^(@)cos108^(@)cos144^(@)=

Promotional Banner

Similar Questions

Explore conceptually related problems

A=cos 20^(@)cos 40^(@) cos60^(@)cos 80^(@) , B=cos6^(@)cos42^(@)cos66^(@)cos78^(@) and C=cos 36^(@)cos72^(@)cos 108^(@)cos 144^(@) then

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

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

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

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

Statement-1: (cos36^(@)-cos72^(@))/(cos36^(@)cos72^(@))=2 Statement-2: sin15^(@)=(sqrt6-sqrt7)/(4)

The value of cos12^(@)cos24^(@)cos36^(@)cos48^(@)cos72^(@)cos84^(@), is

The value of cos12^(@)cos24^(@)cos36^(@)cos48^(@)cos72^(@)cos84^(@), is