જો $\cos^{-1}\left(\frac{2}{3x}\right) + \cos^{-1}\left(\frac{3}{4x}\right) = \frac{\pi}{2}$ અને $x > \frac{3}{4}$ હોય,તો $x$ ની કિંમત શોધો.

  • A
    $\frac{\sqrt{145}}{12}$
  • B
    $\frac{\sqrt{145}}{10}$
  • C
    $\frac{\sqrt{146}}{12}$
  • D
    $\frac{\sqrt{145}}{11}$

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પ્રતિ-ત્રિકોણમિતીય વિધેયોના મુખ્ય મૂલ્યોને ધ્યાનમાં લેતા,$\tan \left(\sin ^{-1}\left(\frac{3}{5}\right)-2 \cos ^{-1}\left(\frac{2}{\sqrt{5}}\right)\right)$ નું મૂલ્ય શોધો.

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