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      Question

      cosec 2910° +sec 4260°+tan 2565° +cot 2115° =?

      A 2 Correct Answer Incorrect Answer
      B 4 Correct Answer Incorrect Answer
      C 1 Correct Answer Incorrect Answer
      D 3 Correct Answer Incorrect Answer

      Solution

      cosec (360°×8+30°) +sec (360°×12-60°) +tan (360°×7+45°) +cot (360°×6-45°) =cosec 30° +sec 60° +tan45°-cot45° =2+2+1-1 =4.

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