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Q:

(secA – 1)/(secA + 1) is equal to?

  • 1
    (1 – sinA)/(1 + sinA)
  • 2
    (1 – cosA)/(1 + cosA)
  • 3
    (1 + cosA)/(1 – cosA)
  • 4
    (1 + sinA)/(1 – sinA)
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Answer : 2. "(1 – cosA)/(1 + cosA)"

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