If `sin x + sin y = sqrt(3) (cos y - cos x)`, then `sin 3x + sin 3y =`

If sinx + sin y = sqrt3 (cosy-cos x),"then show that" sin 3x+ sin 3y = 0

If sin x+sin y=sqrt(3)(cos y-cos x) then (sin3x)/(sin3y)=

If sin x+sin y=sqrt(3)(cos y-cos x), then sin3x+sin3y=(a)2sin3x( b) 0(c)1(d) none of these

If sinx+siny=sqrt(3)(cos y-cos x), then sin3x+sin3y= ___________ (a) 2sin3x (b) 0 (c) 1 (d) none of these

If sin x+sin y=3(cos y-cos x) then the value of sin 3 x+sin 3 y=

If sin x+sin y=3(cos y-cos x) then (sin2020x)/(sin2020y)

If sin x + sin y = a and cos x + cos y = b , what is sin x.sin y + cos x .cos y equal to ?

If sin x + sin y = (7) / (5) and cos x + cos y = (1) / (5) then sin (x + y) equal to