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.

  • A
    $0$
  • B
    $1$
  • C
    $7$
  • D
    $13$

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$(\operatorname{cosec} a - \sin a)(\sec a - \cos a)(\tan a + \cot a)$ ની કિંમત શોધો.

$\cos^2 \frac{\pi}{12} + \cos^2 \frac{\pi}{4} + \cos^2 \frac{5\pi}{12}$ નું મૂલ્ય શોધો.

આપેલ સમીકરણ $4x^2 + 4(a - 1)x + (1 - 2a) = 0$ ના બીજ $\sin \theta$ અને $\cos \theta$ છે,જ્યાં $0 < \theta < \frac{\pi}{2}$,તો $(a + \sin \theta)$ ની મહત્તમ કિંમત શોધો.

જો $\sin x + \sin^2 x = 1$ હોય,તો $\cos^8 x + 2\cos^6 x + \cos^4 x = $

આપેલ છે કે $\pi < \alpha < \frac{3\pi}{2},$ તો પદાવલિ $\sqrt{4\sin^4 \alpha + \sin^2 2\alpha} + 4\cos^2 \left( \frac{\pi}{4} - \frac{\alpha}{2} \right)$ ની કિંમત શોધો.

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