The number of solutions of the equation 1 + sin4x = cos2 3x, x 5 5 , 2 2 é ù p p Î -ê ú ë û is :

Question:

The number of solutions of the equation

$$

1+\sin ^{4} x=\cos ^{2} 3 x, x \in\left[-\frac{5 \pi}{2}, \frac{5 \pi}{2}\right]

$$

  1. 3

  2. 5

  3. 7

  4. 4

Correct Option: 3

JEE Main Previous Year 1 Question of JEE Main from Mathematics Trigonometry chapter.
JEE Main Previous Year

Solution:

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