JEE Math Practice Question
If 0 < x, y < $$\pi$$ and cosx + cosy $$-$$ cos(x + y) = $${3 \over 2}$$, then sinx + cosy is equal to :
- A.$${{1 + \sqrt 3 } \over 2}$$
- B.$${{1 \over 2}}$$
- C.$${{\sqrt 3 } \over 2}$$
- D.$${{1 - \sqrt 3 } \over 2}$$
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