$\cos \left[ {{\tan }^{ - 1}}\frac{1}{3} + {{\tan }^{ - 1}}\frac{1}{2} \right] = $

  • A
    $\frac{1}{{\sqrt 2 }}$
  • B
    $\frac{{\sqrt 3 }}{2}$
  • C
    $\frac{1}{2}$
  • D
    $\frac{\pi }{4}$

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Similar Questions

$\tan ^{-1} \frac{1}{3}+\tan ^{-1} \frac{1}{5}+\tan ^{-1} \frac{1}{7}+\tan ^{-1} \frac{1}{8}$ નું મૂલ્ય શોધો.

જો $y = \cos^{-1}\left( \frac{3\cos x + 4\sin x}{5} \right)$ હોય,તો $\frac{dy}{dx} = $

જો $f(x) = 2 \tan^{-1} x + \sin^{-1} \left( \frac{2x}{1 + x^2} \right)$,જ્યાં $x > 1$,તો $f(5)$ ની કિંમત શોધો:

જો $\sin ^{-1}\left(\frac{x}{5}\right)+\operatorname{cosec}^{-1}\left(\frac{5}{4}\right)=\frac{\pi}{2}$ હોય,તો $x$ ની કિંમત શોધો.

$\sin \left[3 \sin ^{-1}(0.4)\right] = \ldots$

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