JEE Main 2022MathematicsTrigonometric EquationsMediumNumerical

JEE Main 2022Trigonometric Equations Question with Solution

JEE Main 2022 (29 Jun Shift 1)

Question

The number of solutions of the equation 2θ-cos2θ+2=0 in R is equal to ______.

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Show full solutionCorrect answer: 1
Correct answer
1

Step-by-step explanation

2θ-cos2θ+2=0

 2θ+2=cos2θ

As per the graph drawn there is only one point of intersection, so only one solution of the given equation.

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About this question

This is a previous-year question from JEE Main 2022, covering the Trigonometric Equations chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.