જો ${\cot ^{ - 1}}\frac{n}{\pi } > \frac{\pi }{6},\,\,n \in N$ હોય,તો $n$ ની મહત્તમ કિંમત કેટલી થાય?

  • A
    $6$
  • B
    $7$
  • C
    $5$
  • D
    આમાંથી કોઈ નહીં

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$\tan ^{-1}\left(\frac{1}{3}\right)+\tan ^{-1}\left(\frac{1}{5}\right)+\tan ^{-1}\left(\frac{1}{7}\right)+\tan ^{-1}\left(\frac{1}{8}\right)$ ની કિંમત શોધો.

$\tan^{-1}\left(\frac{1}{11}\right) + \tan^{-1}\left(\frac{2}{12}\right) = $

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જો $\cot(\cos^{-1} x) = \sec(\tan^{-1} \frac{a}{\sqrt{b^2 - a^2}})$ હોય, તો $x$ ની કિંમત શોધો

પ્રતિ-ત્રિકોણમિતીય વિધેયના મુખ્ય મૂલ્યોને ધ્યાનમાં લેતા,$\tan \left(\cos ^{-1} \frac{1}{5 \sqrt{2}}-\sin ^{-1} \frac{4}{\sqrt{17}}\right)$ નું મૂલ્ય શોધો.

$\tan \left[ 2\tan^{-1}\left( \frac{1}{5} \right) - \frac{\pi}{4} \right] = $

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