यदि $\sin A, \cos A$ और $\tan A$ एक $G.P.$ में हैं,तो $\cos^3 A + \cos^2 A$ का मान क्या होगा?

  • A
    $1$
  • B
    $2$
  • C
    $4$
  • D
    इनमें से कोई नहीं

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यदि $\sec A = a + \left(\frac{1}{4a}\right)$ है,तो $\sec A + \tan A =$

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