Question

    If 2 sec 3x = 4, then the value of

    x:
    A 10° Correct Answer Incorrect Answer
    B 20° Correct Answer Incorrect Answer
    C 30° Correct Answer Incorrect Answer
    D 40° Correct Answer Incorrect Answer

    Solution

    2 sec 3x = 4 sec 3x = 2 sec 3x = sec 60° 3x = 60° x = 20°

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