`cos66^(@)+sin84^(@)=(sqrt(15)+sqrt(3))/(k)` .Then k=

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

If 4sqrt(3sqrt(x^(2)))=x^(k), then k=

If (6)/(2sqrt(3)-sqrt(5))=(12sqrt(3)+6sqrt(5))/(k), then k=

If log (sqrt(2)+sqrt(3))=cosh^(-1)k then k=

sin57^(@)cos3^(@)=(sqrt(x)+sqrt(y)+1)/(z) , and (x+y+z)=k^(2),k in R then the value of k=

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

(cos15^(@)+sin15^(@))/(cos15^(@)-sin15^(@))=(i)1(ii)sqrt(3)(iii)(1)/(sqrt(3))(iv)2+sqrt(3)

int sqrt(cos x(cos^(3) x + sin 2x))dx = (1- sinx)/(k)sqrt(1+2 sin x-sin^(2)x) + sin^(-1)((1-sinx)/(sqrt(2)))+c then 3k =

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

Prove that (i) " sin " 80^(@) "cos " 20^(@) - " cos " 80^(@) " sin " 20^(@) =(sqrt(3))/(2) (ii) " cos " 45^(@) " cos " 15^(@) - " sin " 45^(@) " sin " 15^(@) = (1)/(2) (iii) " cos " 75^(@) " cos " 15^(@) + " sin " 75^(@) " sin " 15^(2)= (1)/(2) (iv) " sin " 40^(@) " cos " 20^(@) " + cos " 40^(@) " sin " 20^(@) =(sqrt(3))/(2) (v) " cos " 130^(@) " cos " 40^(@) l + " sin " 130^(@) " sin " 40^(@) =0