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      Question

      src="https://www.ixambee.com/questionimage/Railway-Protection-Force-(RPF)-Constable/1717566135-21.JPG" alt="" />
      B –1 Correct Answer Incorrect Answer
      C 2 Correct Answer Incorrect Answer
      D 1 Correct Answer Incorrect Answer

      Solution

      (Cos37°/sin 53°) -cos 47°. cosec 43°. [Sin 53° =cos 37°.]         [Cosec43° = 1/sin43° and sin43° =cos 47°] Put the value – (sin 53°/sin 53°) -sin43°. 1/sin 43°. =1-1 =0.

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