Mathematics · 2024
JEE Main · 8 April 2024, Shift 2 · Q7
The sum of all possible values of θ ∈[-π, 2 π], for which (1+i cos θ)/(1-2 i cos θ) is purely imaginary, is equal to:
The sum of all possible values of $\displaystyle \theta \in[-\pi, 2 \pi]$, for which $\displaystyle \frac{1+i \cos \theta}{1-2 i \cos \theta}$ is purely imaginary, is equal to:
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 3 \pi$
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JEE Main 2024 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.