જો નિત્યસમ $\cos^4 \theta = a \cos 4\theta + b \cos 2\theta + c$ અમુક $a, b, c \in \mathbb{Q}$ માટે સાચું હોય,તો $(a, b, c) =$

  • A
    $\left(\frac{1}{8}, \frac{1}{2}, \frac{3}{8}\right)$
  • B
    $\left(\frac{1}{8}, \frac{1}{2}, \frac{3}{8}\right)$
  • C
    $\left(\frac{1}{2}, \frac{1}{8}, \frac{3}{8}\right)$
  • D
    $\left(\frac{1}{2}, \frac{3}{8}, \frac{1}{8}\right)$

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જો $\tan A = \frac{1}{2}$ હોય,તો $\tan 3A = $

જો $\tan \frac{A}{2} = \frac{3}{2}$ હોય,તો $\frac{1 + \cos A}{1 - \cos A} = $

જો $\sec x + \tan x = 2$,જ્યાં $0 < x < \frac{\pi}{2}$ હોય,તો $\sin \frac{x}{4}$ ની કિંમત શોધો.

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

$\sin 4\theta$ ને કેવી રીતે લખી શકાય?

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