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    Question

    If PQ and PR are the two tangents to a circle with

    center O, and ∠QOR=150°, then ∠QPR is equal to: 
    A 60° Correct Answer Incorrect Answer
    B 30° Correct Answer Incorrect Answer
    C 90° Correct Answer Incorrect Answer
    D 45° Correct Answer Incorrect Answer

    Solution

    ATQ,

    ∠QPR = 180° − ∠QOR = 180° − 150° = 30°

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