જો $\cos ^{-1} x+\cos ^{-1} y+\cos ^{-1} z=3 \pi$ હોય,તો $x(y+z)+y(z+x)+z(x+y)$ ની કિંમત શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $6$
  • D
    $12$

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Similar Questions

$\cot ^{-1}\left(2 \cdot 1^{2}\right)+\cot ^{-1}\left(2 \cdot 2^{2}\right)+\cot ^{-1}\left(2 \cdot 3^{2}\right)+\ldots$ અનંત સુધીનું મૂલ્ય શોધો.

વિધેયોની જોડી(ઓ) ઓળખો જે સમાન છે.

જો $x=\cos ^{-1}\left(\frac{1}{\sqrt{1+t^2}}\right)$ અને $y=\sin ^{-1}\left(\frac{t}{\sqrt{1+t^2}}\right)$ હોય,તો $\frac{dy}{dx}$ શોધો.

જો $y = \sum_{k=1}^{6} k \cos^{-1} \left\{ \frac{3}{5} \cos kx - \frac{4}{5} \sin kx \right\}$ હોય,તો $x = 0$ આગળ $\frac{dy}{dx}$ ની કિંમત શોધો.

$\lim_{x \to 1/\sqrt{2}} \frac{x - \cos(\sin^{-1} x)}{1 - \tan(\sin^{-1} x)}$ ની કિંમત શોધો.

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