$\theta \in (0, \pi)$ માટે $\sin \theta + \sin (4 \theta) + \sin (7 \theta) = 0$ હોય તેવી $\theta$ ની શક્ય કિંમતો કઈ છે?

  • A
    $\frac{\pi}{4}, \frac{5 \pi}{12}, \frac{\pi}{2}, \frac{2 \pi}{3}, \frac{3 \pi}{4}, \frac{8 \pi}{9}$
  • B
    $\frac{2 \pi}{9}, \frac{\pi}{4}, \frac{\pi}{2}, \frac{2 \pi}{3}, \frac{3 \pi}{4}, \frac{35 \pi}{36}$
  • C
    $\frac{2 \pi}{9}, \frac{\pi}{4}, \frac{\pi}{2}, \frac{2 \pi}{3}, \frac{3 \pi}{4}, \frac{8 \pi}{10}$
  • D
    $\frac{2 \pi}{9}, \frac{\pi}{4}, \frac{4 \pi}{9}, \frac{\pi}{2}, \frac{3 \pi}{4}, \frac{8 \pi}{9}$

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સમીકરણ $\sin x + \cos x = 2$ ને

જો $2\tan^2 \theta = \sec^2 \theta$ હોય,તો $\theta$ નું વ્યાપક મૂલ્ય શું છે?

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જો $\tan 2\theta \tan \theta = 1$ હોય,તો $\theta$ નું વ્યાપક મૂલ્ય શું છે?

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