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    Question

    If 4tan4 + 9 тАУ 12tan2 = 0, then

    find the value of cot.
    A тИЪ(3/2) Correct Answer Incorrect Answer
    B тИЪ(3/4) Correct Answer Incorrect Answer
    C тИЪ(2/3) Correct Answer Incorrect Answer
    D тИЪ(1/2) Correct Answer Incorrect Answer

    Solution

    4tan4┬а+ 9 тАУ 12tan2┬а= 0Or, (2tan2┬а- 3)2┬а= 0Or, tan2┬а= 3/2Or, cot2┬а= 2/3So, cot = ┬▒тИЪ(2/3)

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