Question

if Cosx+cosy=2 then the value of sin(x+y)

Answer 1

Answer:

Step-by-step explanation:

cos x + cos y = 2 is possible Only when

cos x = cos y = 1 (Max value of cos function is 1 so 1+1=2)

Since cos x = 1, so x is 0 deg.

Similarly y is equal to 0 deg.

So sin x + sin y= sin 0 + sin 0= 0+0= 0.

So answer is 0.