Multiple Choice Questions on In ang ABC AC BC and ang ABC 50 deg the side BC is produced to D so that BC CD then the value of ang........... for SSC CGL Exam Preparation

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Multiple Choice Questions

In ang ABC AC BC and ang ABC 50 deg the side BC is produced to D so that BC CD then the value of ang...........

Quantitative Aptitude (CGL) Coordinate Geometry
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    In ∠ABC, AC = BC and ∠ABC = 50°, the side BC is produced to D so that BC = CD then the value of ∠BAD is

    80°

    Incorrect Answer

    40°

    Incorrect Answer

    90°

    Correct Answer

    50°

    Incorrect Answer
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    Explanation:


    In?ABC
    ∠B=∠A=50°
    ∠ACD=50°+50°=100
    ∠ACD is the external angle of ?ABC
    ∠ACD+∠CAD+∠ADC=180°
    ∠CAD=∠ADC
    ?AC=CD
    2∠CAD=180−100
    ∠CAD=40°
    ∠BAD=50°+40°
    =90°

    By: MIRZA SADDAM HUSSAIN
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