यदि $x = \sec \theta + \tan \theta$ है,तो $x + \frac{1}{x} = $

  • A
    $1$
  • B
    $2 \sec \theta$
  • C
    $2$
  • D
    $2 \tan \theta$

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$(\sec 2A + 1){\sec ^2}A = $

मान लीजिए $0 < x < \frac{\pi }{4}.$ तब $\sec 2x - \tan 2x = $

$\frac{2\sin \theta \tan \theta (1 - \tan \theta ) + 2\sin \theta \sec^2 \theta}{(1 + \tan \theta )^2} = $

यदि $\tan A = \frac{1 - \cos B}{\sin B}$ है,तो $\tan B$ के पदों में $\tan 2A$ ज्ञात कीजिए और दर्शाइए कि:

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