If $0 < x , y < \pi$ and $\cos x +\cos y-\cos ( x + y )=\frac{3}{2},$ then $\sin x+\cos y$ is equal to ...... .
If $0 < x , y < \pi$ and $\cos x +\cos y-\cos ( x + y )=\frac{3}{2},$ then $\sin x+\cos y$ is equal to ...... .
- [JEE MAIN 2021]
- A
$\frac{1}{2}$
- B
$\frac{1+\sqrt{3}}{2}$
- C
$\frac{\sqrt{3}}{2}$
- D
$\frac{1-\sqrt{3}}{2}$
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- [IIT 1975]
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