if `sinx=12/13` and `siny=4/5` find the values of `sin(x+y)`

If sinx=(5)/(13) and cosx=-(12)/(13) , find the value of sin 2x.

If sin A = 12/13 , then find the value of cos A.

If cosA=12/13 , find the value of sin 3A.

If a,b, ne 0 and sinx+siny=a and cosx+cosy=b , find two values of tan((x+y)/2)

If sinx=3/5,cosy=-(12)/(13), where x and y both lie in second quadrant, find the value of sin (x + y)dot

If sinx=(3)/(5),cosy=-(12)/(13) , where x and y both lie in second quadrant, find the value of sin(x+y) .

If sinx=3/5 , cosy=-12/13 , where x and y both lie in second quadrant, find the value of sin(x+y).

If sin x=(3)/(5), cos y=-(12)/(13) , where 'x' and 'y' both lie in second quadrant, find the value of 'sin(x+y)'