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

  • A
    $3$
  • B
    $5$
  • C
    $7$
  • D
    $11$

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સાબિત કરો કે $\sin^{-1}(2x\sqrt{1-x^2}) = 2\sin^{-1}x$,જ્યાં $-\frac{1}{\sqrt{2}} \leq x \leq \frac{1}{\sqrt{2}}$.

જો ${\tan ^{ - 1}}x - {\tan ^{ - 1}}y = {\tan ^{ - 1}}A$ હોય,તો $A$ ની કિંમત શું થાય?

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