Question

ina triangle ABC if bc =ab , angle b =80 then angle a is equal to ​

Answer 1

Step-by-step explanation:

BC=AB

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

let thte angles be x each.

Now by angle sum property

∠A+∠B+∠C=180∘⇒x+80∘+x=180∘⇒2x=180∘−80∘⇒2x=100∘⇒x=50∘∴∠A=50∘