Aptitude Question ID : 92994

If \cos x+\cos y  = 2, the value of \sin x+\sin y is :
[A]-1
[B]1
[C]0
[D]2

0
\cos x+\cos y  = 2
\because \cos x\leq 1
=> \cos x = 1; \cos y = 1
=> x = y = 0\textdegree [\cos0\textdegree = 1]
\therefore \sin x + \sin y = 0
Hence option [C] is the right answer.

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