જો $r \sin \theta = 3$ અને $r = 4(1 + \sin \theta)$ હોય,જ્યાં $0 \le \theta \le 2\pi$,તો $\theta = $

  • A
    $\frac{\pi}{6}, \frac{\pi}{3}$
  • B
    $\frac{\pi}{6}, \frac{5\pi}{6}$
  • C
    $\frac{\pi}{3}, \frac{\pi}{4}$
  • D
    $\frac{\pi}{2}, \pi$

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જો $\cos \alpha + \cos \beta = a$,$\sin \alpha + \sin \beta = b$ અને $\alpha - \beta = 2 \theta$ હોય,તો $\frac{\cos 3 \theta}{\cos \theta} = $

જો $x = 3 \sin \theta$,$y = 3 \cos \theta \cos \phi$,અને $z = 3 \cos \theta \sin \phi$ હોય,તો $x^{2} + y^{2} + z^{2} =$

$\frac{\sqrt{2}-\sin \alpha-\cos \alpha}{\sin \alpha-\cos \alpha}=$

$\sin^2 5^{\circ} + \sin^2 10^{\circ} + \sin^2 15^{\circ} + \ldots + \sin^2 85^{\circ} + \sin^2 90^{\circ}$ ની કિંમત શોધો.

જો $\sin A+\sin B=\sqrt{3}(\cos B-\cos A)$ હોય,તો $\sin 3A+\sin 3B$ ની કિંમત શોધો.

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