NDA Math Mock Test 02 – Question 48

Question:

The value of \(\cot\left[\dfrac{1}{2}\sin^{-1}\dfrac{\sqrt{3}}{2}\right]\) is

\(\cot\left[\dfrac{1}{2}\sin^{-1}\dfrac{\sqrt{3}}{2}\right]\) का मान क्या है?

Options:

  • \(\dfrac{1}{\sqrt{3}}\)
  • 0
  • 1
  • \(\sqrt{3}\)
  • \(\dfrac{1}{\sqrt{3}}\)
  • 0
  • 1
  • \(\sqrt{3}\)

Correct Answer: d)

Explanation:

\(\sin^{-1}\left(\dfrac{\sqrt{3}}{2}\right) = \dfrac{\pi}{3}\).
\(\cot\left[\dfrac{1}{2} \cdot \dfrac{\pi}{3}\right] = \cot\left(\dfrac{\pi}{6}\right) = \sqrt{3}\).

\(\sin^{-1}\left(\dfrac{\sqrt{3}}{2}\right) = \dfrac{\pi}{3}\)।
\(\cot\left(\dfrac{\pi}{6}\right) = \sqrt{3}\)।

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