यदि $r \sin \theta = 3$ और $r = 4(1 + \sin \theta)$ जहाँ $0 \le \theta \le 2\pi$,तो $\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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$0 < x \leq \pi$ के लिए, $\sinh ^{-1}(\cot x)$ का मान क्या होगा?

यदि $\sin x \cosh y = \cos \theta$,$\cos x \sinh y = \sin \theta$ और $4 \tan x = 3$ है,तो $\sinh^2 y =$

$\cos ^2(x)+\cos ^2\left(x+\frac{\pi}{3}\right)+\cos ^2\left(x-\frac{\pi}{3}\right) = $

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