Question

in ∆ABC ,BC =AB AND (B=80 IS EQUAL TO:°​

Answer 1

Answer:Triangles. In ∆ABC, BC = AB and ∠B = 80°, then ∠A is equal to: 80° 40°

Step-by-step explanation:

Answer 2

50⁰

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As BC=AB

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

Let the angles be x each.

Now by using angle sum property of triangle

∠A+∠B+∠C=180⁰

⇒x+80⁰+x=180⁰

⇒2x=100⁰

⇒x=50⁰

So ∠A=50⁰