in ABC ab = ac if angle c =70 degree find angle A
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Answered by
3
In triangle ABC AB=AC and angle c is 70 degrees
as AB and AC are equal angles opposite to equal sides AB AND AC;;
Angle B= Angle C = 70
Now we know that Angle b = 70 angle C is 70
so angle A will be= 180-ANGLE B+ANGLE C=180-140=40
as AB and AC are equal angles opposite to equal sides AB AND AC;;
Angle B= Angle C = 70
Now we know that Angle b = 70 angle C is 70
so angle A will be= 180-ANGLE B+ANGLE C=180-140=40
Answered by
4
As ab=ac,
Therefore ABC is a isoceles triangle.
C=70
Therefore,B=70(ab=ac)
By angle sum property of triangle,
A+B+C=180
A+70+70=180
Hence,A=40
Therefore,B=70(ab=ac)
By angle sum property of triangle,
A+B+C=180
A+70+70=180
Hence,A=40
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