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    Question

    A man on a cliff observes a boat at an angle of

    depression of 30°, which is approaching the shore to a point exactly beneath the observer, at a uniform speed. Ten minutes later, the angle of depression of the boat is found to be 60°. Find the total time taken by the boat to reach the shore.
    A 15 minutes Correct Answer Incorrect Answer
    B 18 minutes Correct Answer Incorrect Answer
    C 14 minutes Correct Answer Incorrect Answer
    D 16 minutes Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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