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" 24."quad " Statement-I:- "(cos36^(@)-c...

" 24."quad " Statement-I:- "(cos36^(@)-cos72^(@))/(cos36^(@)*cos72^(@))=2

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

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

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

cos 36^@ - cos72^@ =

cos6^(@)*sin24^(@)*cos72^(@)=

cos(36^(@)-A)cos(36^(@)+A)+cos(54^(@)+A)cos(54^(@)-A)=

cos6^(@)sin24^(@)cos72^(@)=

cos 6^(@) sin 24^(@) cos 72^(@) =