જો $\tan A < 0$ અને $\tan 2A = -\frac{4}{3}$ હોય,તો $\cos 6A =$

  • A
    $\frac{117}{125}$
  • B
    $-\frac{117}{125}$
  • C
    $\frac{120}{169}$
  • D
    $-\frac{120}{169}$

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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.

જો $A$ એ $\frac{\pi}{2}$ નો પૂર્ણાંક ગુણક ન હોય,તો $\operatorname{cosec} 2A + \cot 2A$ બરાબર શું થાય?

જો $\sin x + \cos x = \frac{1}{5}$ હોય,તો $\tan 2x$ ની કિંમત શોધો.

જો $\tan x + \tan \left(x + \frac{\pi}{3}\right) + \tan \left(x + \frac{2\pi}{3}\right) = 3$ હોય,તો $\tan 3x$ ની કિંમત કેટલી થાય?

$(1+\sec 2\theta)(1+\sec 4\theta) = $

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