Teaching HTET PGT Level 3 - 2024 Mock Test Mathematics Trigonometry Inverse Trigonometric Functions

The simplest form of \(\rm \tan^{-1}\frac{\sqrt{1+x^2}-1}{x}\), x ≠ 0 is:

1
tan-1 x
2
x
3
\(\frac{1}{2}\tan^{-1}x\)
4
\(\rm \sqrt{1+x^2}\)
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