यदि $\tan x = \frac{b}{a}$ है,तो $\sqrt{\frac{a + b}{a - b}} + \sqrt{\frac{a - b}{a + b}} = $

  • A
    $\frac{2\sin x}{\sqrt{\sin 2x}}$
  • B
    $\frac{2\cos x}{\sqrt{\cos 2x}}$
  • C
    $\frac{2\cos x}{\sqrt{\sin 2x}}$
  • D
    $\frac{2\sin x}{\sqrt{\cos 2x}}$

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यदि $f(x) = \frac{\cos^2 x + \sin^4 x}{\sin^2 x + \cos^4 x}$,$x \in R$ के लिए,तो $f(2002)$ का मान क्या होगा?

वास्तविक संख्याओं $\lambda$ की संख्या ज्ञात कीजिए जिनके लिए समानता $\frac{\sin (\lambda \alpha) \cos (\lambda \alpha)}{\sin \alpha \cos \alpha} = \lambda - 1$ उन सभी वास्तविक $\alpha$ के लिए सत्य है जो $\pi/2$ के पूर्णांक गुणज नहीं हैं।

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यदि $\sinh ^{-1}(\sqrt{8})+\sinh ^{-1}(\sqrt{24})=\alpha$ है,तो $\sinh \alpha=$

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