જો $\left(\frac{\sin 3 \theta}{\sin \theta}\right)^2-\left(\frac{\cos 3 \theta}{\cos \theta}\right)^2=a \cos b \theta$ હોય,તો $a: b=$

  • A
    $4: 1$
  • B
    $8: 1$
  • C
    $3: 2$
  • D
    $2: 1$

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Similar Questions

$\cos A \cos 2 A \cos 4 A \ldots \cos 2^{n-1} A$ ની કિંમત શું થાય?

જો $\sec x = \frac{25}{24}$ અને $x$ પ્રથમ ચરણમાં હોય,તો $\sin \frac{x}{2} + \cos \frac{x}{2} =$

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 $(a, b, c) =$

જો $\frac{5\pi}{2} < x < 3\pi$ હોય,તો પદાવલિ $\frac{\sqrt{1 - \sin x} + \sqrt{1 + \sin x}}{\sqrt{1 - \sin x} - \sqrt{1 + \sin x}}$ ની કિંમત શોધો.

કિંમત શોધો: $\cos \frac{\pi}{5} \cos \frac{2\pi}{5} \cos \frac{4\pi}{5} \cos \frac{8\pi}{5}$

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