જો $\cos ^{-1} 2x + \cos ^{-1} 3x = \frac{\pi}{3}$ અને $4x^2 = \frac{a}{b}$ હોય,તો $a + b =$

  • A
    $12$
  • B
    $11$
  • C
    $31$
  • D
    $10$

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Similar Questions

$\begin{aligned} & 2 \sin ^{-1} x+\sin ^{-1}\left(2 x \sqrt{1-x^2}\right)+3 \cos ^{-1} x \\ & -\cos ^{-1}\left(4 x^3-3 x\right) \text{ની કિંમત શોધો. }\end{aligned}$

$\tan \frac{1}{2} \left[ \sin^{-1} \frac{2x}{1+x^2} + \cos^{-1} \frac{1-y^2}{1+y^2} \right]$ ની કિંમત શોધો,જ્યાં $|x | < 1, y>0$ અને $xy < 1$ છે.

ત્રિકોણમિતીય સમીકરણ $\sin ^{-1} x = 2 \sin ^{-1} 2a$ નો વાસ્તવિક ઉકેલ મળે, જો

$\tan ^{-1} \sqrt{3} - \cot ^{-1}(-\sqrt{3}) = $ . . . . . . .

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

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