Question

plz mate answer me with explanations​

Answer 1

Hello mate your answer


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Answer 2

Angle A+angle B+angle C=180°

70°+angle B+angle C=180°

angle B+angle C=180°-70°

angle C=110°

angle BIC+angle CBI+angle IBC=180°

angle BIC+1\2(angle ABC)+1\2(angle ACB)=180°

angle BIC+1\2(angle ABC+angle ACB)=180°

angle BIC+1\2(110°)=180°

angle BIC+55=180°

angle BIC=180°-55°

angle BIC=125°

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