If `3sin(x y)+4cos(x y)=5` , then `(dy)/(dx)=` (a)` y/x` (b) `(3sin(x y)+4cos(x y))/(3cos(x y)-4sin(x y))` (c) `(3cos(x y)+4sin(x y))/(4cos(x y)-3sin(x y))` (d) none

If 3sin(x y)+4cos(x y)=5,t h e n(dy)/(dx)= (a) -y/x (b) (3sin(x y)+4cos(x y))/(3cos(x y)-4sin(x y)) (c) (3cos(x y)+4sin(x y))/(4cos(x y)-3sin(x y)) (d) (sin^2(a+y))/(sina)

If x sin y = 3 sin y + 4 cos y , then (dy)/(dx) =

(dy) / (dx) = (sin x-sin y) (cos x) / (cos y)

If y=cos ^(-1) ((3sin x +4cos x)/( 5)),then (dy)/(dx) =

cos ^ (3) x (dy) / (dx) + y cos x = sin x

If y=cos ^(-1) ((3cos x-4sin x )/( 5) ) ,then (dy)/(dx)=

cos4x-cos4y = 8 (cos x-cos y) (cos x + cos y) (cos x-sin y) (cos x + sin y)

(dy) / (dx) = - (cos x (3cos y-7sin x-3)) / (sin y (3sin x-7cos y + 7))

Prove that : (sin (x+y))/(sin (x-y) )= (sin x. cos y + cos x . Sin y)/(sin x. cos y-cos x. sin y)

Prove that : (sin (x+y))/(sin (x-y) )= (sin x. cos y + cos x . Sin y)/(sin x. cos y-cos x. sin y)