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Q:

यदि a=tanθ + 1 और b=sinθ+cosθ है तो (b2-1)a का मान होगा—

  • 1
    ab
  • 2
    2bsecθ
  • 3
    2b
  • 4
    2bsin θ
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Answer : 4. "2bsin θ"

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