Mathematics · 2019
JEE Main · 12 April 2019, Shift 1 · Q88
The number of solutions of the equation 1+ sin^4 x= cos^2 3 x, x ∈[-(5 π)/2, (5 π)/2] is:
The number of solutions of the equation $\displaystyle 1+\sin ^4 x=\cos ^2 3 x, x \in\left[-\frac{5 \pi}{2}, \frac{5 \pi}{2}\right]$ is :
Official answer
(4)
$\displaystyle 5$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.