Mathematics · 2021
JEE Main · 25 February 2021, Shift 2 · Q77
If 0<x, y<π and cos x+ cos y- cos (x+y)=3/2, then sin x+ cos y is equal to:
If $\displaystyle 0<x, y<\pi$ and $\displaystyle \cos x+\cos y-\cos (x+y)=\frac{3}{2}$, then $\displaystyle \sin x+\cos y$ is equal to:
Official answer
(4)
$\displaystyle \frac{1+\sqrt{3}}{2}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.