Question

In triangle abc , if angle A + angle B = 125 degree and angle A + angle C = 113 degree , find angle A , angle B and angle C

Answer 1

A+B+C=180 DEGREE

AS A+B=125 DEGREE

125+C=180

C=180-125=55 DEGREE

AS A+C=113

A+C+B=180

113+B=180

B=180-113

B=67 DEGREE

A+B+C=180

A+67+55=180

A+122=180

A=180-122

A=58 DEGREE

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