Question

In ∆ABC, BC = AB and ∠B = 86˚ then∠A is equal to

Answer 1

Step-by-step explanation:

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

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Answer 2

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+86

∘

+x=180

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⇒2x=180

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−86

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⇒2x=94

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⇒x=47

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∴∠A=47

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