Question

If 0 < x, y < π and cosx + cosy - cos(x + y) = 3/2, then sinx + cosy is equal to :

(1) \(\frac 12\)

(2) \(\frac{1+\sqrt3}2\)

(3) \(\frac{\sqrt3}2\)

(4) \(\frac{1-\sqrt3}2\)

Answer 1

Correct Option is (2) \(\frac{1+\sqrt3}2\)