Mathematics · 2013
JEE Main · 23 April 2013, Shift 1 · Q74
The number of solutions of the equation sin 2 x-2 cos x+4 sin x=4 in the interval [0,5 π] is:
The number of solutions of the equation $\displaystyle \sin 2 x-2 \cos x+4 \sin x=4$ in the interval $\displaystyle [0,5 \pi]$ is :
Official answer
(1)
$\displaystyle 3$
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JEE Main 2013 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.