Question

in triangle ABC,BC=AB and angleB=70°.Then angle A is equal to​

Answer 1

Answer:

angle A =55 degree

Step-by-step explanation:

AB=BC

angleA+angleB+angleC=180 degree

angleA+70 degree +angleC =180 degree

angleA=angleC

angleA+angleC=180-70 degree

2angleA=110 degree

Therefore , angleA=55 degree

Answer 2

Answer:

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