જો $A = \sin^2 x + \cos^4 x$ હોય,તો તમામ વાસ્તવિક $x$ માટે :

  • A
    $1 \le A \le 2$
  • B
    $\frac{13}{16} \le A \le 1$
  • C
    $\frac{3}{4} \le A \le 1$
  • D
    $\frac{3}{4} \le A \le \frac{13}{16}$

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જો $\frac{\sqrt{2} \sin \alpha}{\sqrt{1+\cos 2 \alpha}}=\frac{1}{7}$ અને $\sqrt{\frac{1-\cos 2 \beta}{2}}=\frac{1}{\sqrt{10}}$ જ્યાં $\alpha, \beta \in (0, \frac{\pi}{2})$ હોય,તો $\tan (\alpha+2 \beta)$ ની કિંમત શોધો.

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જો $x \sin \theta = y \sin \left( \theta + \frac{2\pi}{3} \right) = z \sin \left( \theta + \frac{4\pi}{3} \right)$ હોય,તો:

જો $\tan A$ અને $\tan B$ એ દ્વિઘાત સમીકરણ $3x^2 - 10x - 25 = 0$ ના બીજ હોય,તો $3 \sin^2 (A + B) - 10 \sin (A + B) \cos (A + B) - 25 \cos^2 (A + B)$ ની કિંમત શોધો.

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$\text{cosec } A - 2 \cot 2A \cos A = $

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