यदि $x + y = \frac{\pi}{4}$ है, तो $(1 + \tan x)(1 + \tan y) =$ का मान क्या होगा?

  • A
    $1$
  • B
    $2$
  • C
    $3$
  • D
    $0$

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यदि $\tan A=\frac{1}{\sqrt{x(x^2+x+1)}}, \tan B=\frac{\sqrt{x}}{\sqrt{x^2+x+1}}$ और $\tan C=\sqrt{x^{-1}+x^{-2}+x^{-3}}$ है,तो:

यदि $m \cos (\alpha+\beta)-n \cos (\alpha-\beta)=m \cos (\alpha-\beta)+n \cos (\alpha+\beta)$ है,तो $\tan \alpha \tan \beta=$

यदि $\tan \left( \frac{\pi }{4} + \theta \right) + \tan \left( \frac{\pi }{4} - \theta \right) = \lambda \sec 2\theta$ है,तो $\lambda$ =

$(\cos \alpha+\cos \beta)^2+(\sin \alpha+\sin \beta)^2$ का मान है

यदि $\tan \alpha = \frac{m}{m + 1}$ और $\tan \beta = \frac{1}{2m + 1}$ है,तो $\alpha + \beta = $

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