Multiple Choice Questions on Each of the circles of equal radii with centres A and B pass through the centre of one another circl........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

Each of the circles of equal radii with centres A and B pass through the centre of one another circl...........

Quantitative Aptitude ( CCS) Geometry
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    Each of the circles of equal radii with centres A and B pass through the centre of one another circle they cut at C and D then ∠DBC is equal to

    160°

    Incorrect Answer

    140°

    Incorrect Answer

    100°

    Incorrect Answer

    120°

    Correct Answer
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    Explanation:


    In ΔABD,
    AD = BD = AB = radius
    ∴  ΔABD is an equilateral triangle
    ∴  ∠ABC = 60°
    In ΔABC
    AC = BC = AB = radius
    ∴  ΔABC is an equilateral triangle
    ∴  ∠ABD = 60°
    ∴  ∠DBC = ∠ABC + ∠ABD = 60° + 60° = 120°

    By: MIRZA SADDAM HUSSAIN
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