જો $\pi \leq x \leq 2 \pi$ હોય,તો $\cos^{-1}(\cos x)$ બરાબર શું થાય :-

  • A
    $x$
  • B
    $-x$
  • C
    $2 \pi + x$
  • D
    $2 \pi - x$

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$2 \cos ^{-1} x = \sin ^{-1} \left( 2 x \sqrt{1 - x^2} \right)$ એ $x$ ની કઈ કિંમતો માટે સાચું છે?

જો $\tan ^{-1} a+\tan ^{-1} b+\tan ^{-1} c=\pi$ હોય,તો નીચેનામાંથી કયું સાચું છે?

કિંમત શોધો: ${\tan ^{ - 1}}1 + {\tan ^{ - 1}}2 + {\tan ^{ - 1}}3$

$\sin \left[ 3 \sin^{-1} \left( \frac{1}{5} \right) \right] = $

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

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