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    Question

    The minimum value of 9 cos2 ╬╕ + 36

    sec2 ╬╕┬аis┬а
    A 12 Correct Answer Incorrect Answer
    B 16 Correct Answer Incorrect Answer
    C 44 Correct Answer Incorrect Answer
    D 36 Correct Answer Incorrect Answer

    Solution

    The minimum value of a x + (b/x) is = 2 So the minimum value of┬а 9 cos 2┬а╬╕ + 36 sec 2┬а╬╕ ┬а= 2 = 2 = 2 18 =36

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