$\sin ^{-1}\left(\cos \frac{\pi}{13}\right)+\cos ^{-1}\left(\sin \frac{\pi}{13}\right) = $ . . . . . . .

  • A
    $\frac{\pi}{13}$
  • B
    $\frac{15 \pi}{13}$
  • C
    $\frac{11 \pi}{13}$
  • D
    $\frac{9 \pi}{13}$

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Similar Questions

શ્રેણી $\tan^{-1}\left(\frac{1}{3}\right) + \tan^{-1}\left(\frac{2}{9}\right) + \dots + \tan^{-1}\left(\frac{2^{n-1}}{1+2^{2n-1}}\right) + \dots$ ના અનંત પદોનો સરવાળો શોધો.

જો $\tan ^{-1}\left(\frac{x+1}{x-1}\right)+\tan ^{-1}\left(\frac{x-1}{x}\right)=\tan ^{-1}(-7)$ હોય,તો $x$ ની કિંમત શોધો.

જો $2 \sin^{-1} x = \sin^{-1}(2x \sqrt{1-x^2})$ હોય,તો $x \in$ . . . . . . .

જો $0 \le x \le 1$ અને $(\sin^{-1} x)^3 + (\cos^{-1} x)^3 = a\pi^3$ હોય, તો $a$ નો વિસ્તાર શોધો.

જો $\operatorname{Tan}^{-1} \frac{1}{3}+\operatorname{Tan}^{-1} \frac{1}{7}+\operatorname{Tan}^{-1} \frac{1}{13}+\ldots+\operatorname{Tan}^{-1} \frac{1}{n^2+n+1}=\operatorname{Tan}^{-1} \theta$ હોય,તો $\theta=$

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