यदि cos θ = 2p/(1+p2) है, तो tan θ बराबर है-

  • 1

    p2/1+p2

  • 2

    (1-p2) / (1+p2)

  • 3

    (2p) / (1-p2)

  • 4

    (1-p2) / 2p

Answer:- 4

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