JEE MATHEMATICS MCQ: INVERSE TRIGONOMETRY

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Analyzing +4 | -1

The number of solutions of the equation

\cos ^{-1}(1-x)+m \cos ^{-1}(x)=\frac{n \pi}{2}

, where

m > 0

n \leq 0

, is

View answer and explanation

Correct option: A

Option A (0) is correct because the limit from both sides (x → 0+ and x → 0-) results in [sin(1)/1] = 0 and [sin(-1)/-1] = 0, respectively.

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