Question

In triangleABC, BC=AB and angle B=80°,then angle A is equal to
I need a step by step explailation.​

Answer 1

HEY MATE THIS IS THE REQUIRED ANSWER

Answer 2

Step-by-step explanation:

BC=AB

⇒∠A=∠C (As angles opposite to equal side are equal)

let the angles be x each.

Now by angle sum property

∠A+∠B+∠C=180°

⇒x+x+80°=180°

⇒2x=180°−80°

⇒2x=100

x=100/2

⇒x=50°

∴∠A=50°