$\sin \left(\tan ^{-1} \frac{4}{5}+\tan ^{-1} \frac{4}{3}+\tan ^{-1} \frac{1}{9}-\tan ^{-1} \frac{1}{7}\right) = $

  • A
    $\frac{1}{2}$
  • B
    $\frac{1}{\sqrt{2}}$
  • C
    $\frac{\sqrt{3}}{2}$
  • D
    $1$

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Similar Questions

$x$ ની કિંમત શોધો, જ્યાં $x>0$ અને $\tan \left(\sec ^{-1}\left(\frac{1}{x}\right)\right)=\sin \left(\tan ^{-1} 2\right)$ છે.

$\mathop {Limit}\limits_{x \to \infty } \,\frac{{{{\cot }^{ - 1}}\left( {\sqrt {x + 1} \, - \,\sqrt x } \right)}}{{{{\sec }^{ - 1}}\left\{ {{{\left( {\frac{{2x + 1}}{{x - 1}}} \right)}^x}} \right\}}}$ ની કિંમત શોધો.

જો $\sin ^{-1} \frac{\alpha}{17}+\cos ^{-1} \frac{4}{5}-\tan ^{-1} \frac{77}{36}=0$ અને $0 < \alpha < 13$ હોય,તો $\sin ^{-1}(\sin \alpha)+\cos ^{-1}(\cos \alpha)$ ની કિંમત $.........$ થાય.

જો $\alpha$ અને $\beta$ એ દ્વિઘાત સમીકરણ $3x^2 - 16x + 5 = 0$ ના બીજ હોય,તો $\tan^{-1} \alpha + \tan^{-1} \beta - \tan^{-1}\left(\frac{\alpha + \beta}{1 - \alpha \beta}\right) = $

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.

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