Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Determinants

Question:

The value of $\tan ^2\left(\sec ^{-1} 2\right)$ is :

Options:

5

3

4

6

Correct Answer:

3

Explanation:

$y=\tan ^2\left(\sec ^{-1} 2\right)$

we know that $\sec ^{-1} 2=\cos ^{-1} \frac{1}{2}=\frac{\pi}{3}$

So $y=\tan ^2\left(\frac{\pi}{3}\right)$

$y=(\sqrt{3})^2=3$