Question

    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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