Question

in ∆abc,if bc= ab and angle b=80° find angle a​

Answer 1

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

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⇒x+80

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+x=180

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⇒2x=180

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−80

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⇒2x=100

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⇒x=50

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∴∠A=50

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Answer 2

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