$x$ ની કિંમત શોધો જેથી $\sin \left(2 \tan ^{-1} \frac{3}{4}\right)=\cos \left(2 \tan ^{-1} x\right)$ થાય.

  • A
    $7$
  • B
    $\frac{3}{7}$
  • C
    $\frac{1}{7}$
  • D
    $\frac{4}{7}$

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Similar Questions

$\cot ^{-1}\left(\frac{1}{\sqrt{x^2-1}}\right)=$ . . . . . . જ્યાં,$x>1$.

સાબિત કરો કે $\sin ^{-1} \frac{8}{17}+\sin ^{-1} \frac{3}{5}=\tan ^{-1} \frac{77}{36}$

સાબિત કરો કે $\sin ^{-1} \frac{3}{5}-\sin ^{-1} \frac{8}{17}=\cos ^{-1} \frac{84}{85}$

જો $A=2 \tan ^{-1}\left(\frac{1+x}{1-x}\right)$ અને $B=\cos ^{-1}\left(\frac{1-x^2}{1+x^2}\right)$,જ્યાં $x \in(0,1)$,તો $A-B=$

$\cot^{-1} \left[ \frac{\sqrt{1 - \sin x} + \sqrt{1 + \sin x}}{\sqrt{1 - \sin x} - \sqrt{1 + \sin x}} \right]$ ની કિંમત શોધો, જ્યાં $x \in (0, \frac{\pi}{2})$ છે.

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