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UPSC NDA II 2023 Mathematics Solved Paper

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Consider the following for the next two (02) items that follow :

Let

\sin\; x+\sin\; y=\sqrt{3}(\cos y-\cos x) ; x+y=\;\frac{\pi}{2}

,

0< x, y < \;\frac{\pi}{2}

[NDA II 2023]

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Question : 77 of 120

Marks: +1, -0

What is a value of

\sin 3x + \sin 3y ?

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0
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