In a triangle ABC,AngleA=120° and AngleB=2AngleC. Find AngleB and Angle C​

1 thought on “In a triangle ABC,AngleA=120° and AngleB=2AngleC. Find AngleB and Angle C​”

1. Answer:

   angle C=20degree

   angle B=40 degree

   Step-by-step explanation:

   let angle C be x. and angle A=120 degree (given)

   therefore, angleB=2x

   we know that

   sum of all angles of triangle =180 degree

   angleA+angleB+angleC=180 degree

   120+2x+x=180

   3x=180-120

   3x=60

   x=60/3

   x=20 degree

   angle C=x=20degree

   angle B=2x=2×20=40 degree

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