Question

in triangle ABC, if ab=ac ,if angle a =40 find angle b and angle c​

Answer 1

Answer:

angle sum property of triangle=180°

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Answer 2

Explanation:

• when opposite sides of an triangle is equal then the both angles are also equal ( as shown in above figure ) ✓
• sum of angles of triangle is 180°
• so

40 + x+ x = 180°

40 + 2x = 180°

• remove all constant

2x = 180°-40°

2x = 140°

x = 140 by 2

x = 70

• angle a is 40° b and c is 70°