यदि $y^2+z^2=3yz$,$z^2+x^2=8zx$,और $x^2+y^2=4xy$ है,तो $\frac{y^2}{xz}+\frac{xz}{y^2}$ का मान ज्ञात कीजिए।

  • A
    $2$
  • B
    $3$
  • C
    $4$
  • D
    $5$

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$\tan 40^{\circ} + \tan 11^{\circ} + \tan 20^{\circ} - \tan 56^{\circ} + \tan 56^{\circ} \tan 11^{\circ} + \sqrt{3} \tan 40^{\circ} \tan 20^{\circ}$ का मान है

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?

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