સંખ્યાઓ $a, b, 8, 5, 10$ નો મધ્યક $6$ છે અને તેમનું વિચરણ $6.80$ છે. તો $\operatorname{Tan}^{-1} \frac{1}{a} + \operatorname{Tan}^{-1} \frac{1}{b} =$

  • A
    $\operatorname{Tan}^{-1} \frac{7}{12}$
  • B
    $\operatorname{Tan}^{-1} \left(-\frac{7}{11}\right)$
  • C
    $\operatorname{Tan}^{-1} \frac{11}{7}$
  • D
    $\operatorname{Tan}^{-1} \frac{7}{11}$

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Similar Questions

$2(\cos ^{-1} x)^2-\pi \cos ^{-1} x+\frac{\pi^2}{4}$ ની મહત્તમ અને ન્યૂનતમ કિંમતોનો સરવાળો કેટલો થાય?

જો $y=\cos ^{-1}\left(\frac{a^2-x^2}{a^2+x^2}\right)+\sin ^{-1}\left(\frac{2 a x}{a^2+x^2}\right)$ હોય,તો $\frac{d y}{d x}$ ની કિંમત શોધો.

જો $\sin ^{-1} x-\cos ^{-1} 2 x=\sin ^{-1}\left(\frac{\sqrt{3}}{2}\right)-\cos ^{-1}\left(\frac{\sqrt{3}}{2}\right)$ હોય, તો $\tan ^{-1} x+\tan ^{-1}\left(\frac{x}{x+1}\right)=$

$\sin ^{-1}(1-x)-2 \sin ^{-1} x=\frac{\pi}{2}$ ઉકેલો,તો $x$ ની કિંમત શોધો.

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$\lim _{x \rightarrow 1} \frac{\sqrt{x}-1}{(\cos ^{-1} x)^2} = $

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