(19)+(sin24^(@)+cos6^(@))=sqrt(3)+sqrt(15)

4(sin24^(0)+cos6^(@))=sqrt(3)+sqrt(15)

prove that 4sin(24^(@)+cos6^(@))=sqrt(3)+sqrt(15)

4(sin2 4^0+cos6^0)=sqrt(3)+sqrt(15)

4(sin2 4^0+cos6^0)=sqrt(3)+sqrt(15)

sqrt(x+3)+sqrt(x+15)<6

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

Prove that 4(cos66^(@)+sin84^(@)) = sqrt(3) + sqrt(15) .

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

(sin75^(@) - sin 15^(@))/(cos 75^(@) + cos 15^(@)) A) -sqrt3 B) sqrt3 C) (1)/(sqrt3) D) (1)/(sqrt3)

Prove that (i) " 2 cos " 45^(@) " cos " 15^(@)=((sqrt(3)+1))/(2) " "(ii) 2 " sin " 75^(@) " sin " 15^(@)=(1)/(2) (iii) " cos " 15^(@) - " sin " 15 =(1)/(sqrt(2))