JEE Main 2025 Mathematics question

MathematicsTrigonometric EquationsJEE Main 2025

Not in JEE Main syllabus

If θ ∈ [–2π, 2π], then the number of solutions of , is equal to :

Answer: (3)

Solution

Factors to (2cosθ–√3)(√2cosθ+1)=0, giving cosθ=√3/2 or –1/√2, yielding 8 solutions in the given range.

Question ID VK-002508