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CUET · MATHS · PYQ PAPER 2025

for \(|x|<1, \sin \left(\tan ^{-1} x\right)\) equal to:

  1. A \(\frac{1}{\sqrt{1+x^2}}\)
  2. B \(\frac{1}{\sqrt{1-x^2}}\)
  3. C \(\frac{x}{\sqrt{1-x^2}}\)
  4. D \(\frac{x}{\sqrt{1+x^2}}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{x}{\sqrt{1+x^2}}\)

Step-by-step Solution

Detailed explanation

Let \( \theta = \tan^{-1} x \). \( \tan \theta = x \) \( \sin \left(\tan^{-1} x\right) = \sin \theta = \frac{\text{opposite}}{\text{hypotenuse}} = \frac{x}{\sqrt{1+x^2}} \)
From CUET
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