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Statement-1: (cos36^(@)-cos752^(@))/(co...

Statement-1: `(cos36^(@)-cos752^(@))/(cos36^(@)cos72^(@))=2`
Statement-2: `sin15^(@)=(sqrt6-sqrt7)/(4)`

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

cos 36^(@) - cos 72^(@) =

cos 36^@ - cos72^@ =

4cos36^(@)+cot7(1)/(2^(@))=

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

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

sin36^(@)+cos36^(@)=sqrt(2)cos9^(@)

Prove that (sin36^(@))/(cos54^(@))+(cos36^(@))/(sin54^(@))=2