અંતરાલ $[0, 2\pi]$ માં $8 \cos^2 \theta + 14 \cos \theta + 5 = 0$ નો ઉકેલ ગણ શું છે?

  • A
    $\left\{\frac{\pi}{3}, \frac{2\pi}{3}\right\}$
  • B
    $\left\{\frac{\pi}{3}, \frac{4\pi}{3}\right\}$
  • C
    $\left\{\frac{2\pi}{3}, \frac{4\pi}{3}\right\}$
  • D
    $\left\{\frac{2\pi}{3}, \frac{5\pi}{3}\right\}$

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Similar Questions

$1+\cos^2 \theta = 3 \sin \theta \cos \theta \Rightarrow \theta = ?$

સમીકરણ $\sin x + \cos x = 2$ ને

ધારો કે $S = \{\theta \in (-2\pi, 2\pi) : \cos\theta + 1 = \sqrt{3} \sin\theta\}$. તો $\sum_{\theta \in S} \theta$ ની કિંમત શોધો:

$n \in Z$ માટે,સમીકરણ $(\sqrt{3} - 1) \sin \theta + (\sqrt{3} + 1) \cos \theta = 2$ નો વ્યાપક ઉકેલ શોધો.

જો $5 \cos 2 \theta + 2 \cos^2 \frac{\theta}{2} + 1 = 0$, જ્યાં $0 < \theta < \pi$, તો $\theta$ ના મૂલ્યો શોધો:

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