જો $\cosh x = \frac{5}{4}$ હોય,તો $\tanh 3x =$ શું થાય?

  • A
    $\frac{63}{65}$
  • B
    $\frac{25}{26}$
  • C
    $\frac{65}{67}$
  • D
    $\frac{252}{265}$

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જો $\frac{\sec 8\theta - 1}{\sec 4\theta - 1} = \frac{a + b \tan^2 2\theta}{1 + c \tan^2 2\theta + d \tan^4 2\theta}$ (જ્યાં $\theta \neq \frac{n\pi}{16}, n \in I$),તો $(a - b + c - d)$ ની કિંમત શોધો.

કિંમત શોધો: $\sin(22 \frac{1}{2}^{\circ})$

$\tan A + 2 \tan 2A + 4 \tan 4A + 8 \cot 8A = $

જો $\sec \theta = 1\frac{1}{4}$ હોય,તો $\tan \frac{\theta}{2} = $

$\tan 3A \cdot \tan 2A \cdot \tan A = $

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