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In a triangle ABC angle A …

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In a triangle ABC angle A = 120° and angleB=2 angle C .Find angleB angleC

    • Posted by Suvendu Nayak 6 years, 10 months ago

    CBSE > Class 07 > Mathematics
    • 2 answers

    Kishan Srivastava 6 years, 10 months ago

    As we know, In triangle sum of all angles of triangle is 180

    therefore,

     angle A+ angleB+angle C=180

    120+2angle C+angleC=180.        (As angleA=120 & angle B=2angle C)

    3angle C=180-120

                   =60

    angle C=60/3

                 =20 

    angle B=2 angleC=2*20=40

    ?

    2Thank You

    Ligi Dipu 6 years, 10 months ago

    In Triangle ,Total sum of angles =180

    A+B+C=180

    120+2C+C=180 (B=2C)

    120+3C=180

    3C=180-120=60

    C=60\3

    C=20

    B=2C=40

    1Thank You

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