यदि $f(x) = \cos^2 x + \sec^2 x$ है,तो

  • A
    $f(x) < 1$
  • B
    $f(x) = 1$
  • C
    $1 < f(x) < 2$
  • D
    $f(x) \ge 2$

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यदि $(1 + \sin A)(1 + \sin B)(1 + \sin C) = (1 - \sin A)(1 - \sin B)(1 - \sin C)$ है,तो प्रत्येक पक्ष किसके बराबर है?

यदि $A$ दूसरे चतुर्थांश में है और $B$ तीसरे चतुर्थांश में है और $\cos A = -\frac{\sqrt{3}}{2}$ तथा $\sin B = -\frac{3}{5}$ है,तो $\frac{2 \tan B + \sqrt{3} \tan A}{\cot^2 A + \cos B}$ का मान ज्ञात कीजिए।

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