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

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

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

Prove that : sin 75^0 = (sqrt(6) + sqrt(2))/4

Prove that : sin 75^0 = (sqrt(6) + sqrt(2))/4

cos66^(0)+sin84^(0)=(sqrt(15)+sqrt(3))/(K) then K=

Show that: sin 50^0cos85^0=(1-sqrt(2)sin35^0)/(2sqrt(2))

Show that: sin 50^0cos95^0=(sqrt(2)sin35^0-1)/(2sqrt(2))

Prove that (i) " sin " 75^(@) =((sqrt(6)+sqrt(2)))/(4) (ii) (cos 135^(@) -cos 120^(@))/(cos 135^(@) +cos 120^(@)) =(3 -2sqrt(2)) (iii) " tan " 15^(@) +" cot " 15^(@) =4

which of the following is /are correct? (A) cos72^(0)=(sqrt(5)-1)/(4) (B) sin54^(0)=(sqrt(5)-1)/(4) (C) cot7(1)/(2)^(0)=sqrt(2)+sqrt(3)+sqrt(4)+sqrt(6) (D) 4sin27^(0)=sqrt(5+sqrt(5))+sqrt(3-sqrt(5))

If sin4A-cos2A=cos4A-sin2A,(0ltAlt(pi)/(4)), then the value of tan4A is a)1 b) (1)/(sqrt(3)) c) sqrt(3) d) (sqrt(3)-1)/(sqrt(3)+1)