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Q:

$$\left({1\over cosecθ}-{1\over sinθ} \right)+{1\over {cosecθ-cotθ}} -{1\over secθ+tanθ} =?$$

  • 1
    sinθcosθ
  • 2
    sinθtanθ
  • 3
    secθcosecθ
  • 4
    cosecθcotθ
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Answer : 3. "secθcosecθ"

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