In ∆ABC, BC= AB and LB = 80º, then find ∆A​

Question

In ∆ABC, BC= AB and LB = 80º, then find ∆A​

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Arianna 7 days 2021-09-11T04:17:14+00:00 2 Answers 0 views 0

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    0
    2021-09-11T04:18:23+00:00

    Answer:

    the above answer is correct

    it’s for the buddy how gave above answer

    brain vich bar bar aunda si tahi tera yaar मशहूर hogya

    hlo again and how r u

    It’s Mr.Jatt

    and it’s the truth

    0
    2021-09-11T04:19:10+00:00

    Step-by-step explanation:

    In triangle ABC, BC=AB and angle B= 80, then angle A = 50

    Solution:

    Given that in triangle ABC, BC = AB which means ABC is an isosceles triangle.

    We know the sum of angles in a triangle is 180°. Since it is an isosceles triangle the measure of two angles will be same. Let ∠A = x and ∠c = x

    We know,

    Sum of all angles = 180°

    x+x+80° = 180°

    2x= 180°-80°

    2x=100°

    x=100÷2

    x=50

    Thus the measure of ∠A = 50°

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