જો $\cos^{-1}\left(\frac{x}{a}\right) + \cos^{-1}\left(\frac{y}{b}\right) = \alpha$ હોય,તો $\frac{x^2}{a^2} - \frac{2xy}{ab}\cos \alpha + \frac{y^2}{b^2} = $

  • A
    $\sin^2 \alpha$
  • B
    $\cos^2 \alpha$
  • C
    $\tan^2 \alpha$
  • D
    $\cot^2 \alpha$

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Similar Questions

$\frac{d}{dx}(\sin^{-1}(3x - 4x^3)) = $

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.

જો $a_1, a_2, a_3, \dots, a_n$ સમાંતર શ્રેણીમાં હોય અને સામાન્ય તફાવત $d$ હોય, તો $\tan [\tan^{-1} (\frac{d}{1 + a_1a_2}) + \tan^{-1} (\frac{d}{1 + a_2a_3}) + \dots + \tan^{-1} (\frac{d}{1 + a_{n-1}a_n})] = $

જો $\sin ^{-1} x+\sin ^{-1} y=\frac{\pi}{3}$ અને $\cot ^{-1}\left(\frac{1}{x}\right)-\cot ^{-1}\left(\frac{1}{y}\right)=0$ હોય,તો $2 x^2+y^2-x y=$

સમીકરણ $\sin \left[ \cot^{-1} (1 + x) \right] = \cos \left[ \tan^{-1} x \right]$ નું સમાધાન કરતું $x$ નું મૂલ્ય શોધો.

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