Question

in ∆ abc ∆a=100° and ab is equal to AC then find the measure of angle b​

Answer 1

Answer:

we, know that the sum of all angles of triangle=180

it is given that √a=100

but ,AC=ab

it means it is a isosceles triangle

we also known that angles of equal side is equal

so,

√b =√c

let the √b,√c=X

so,√a +√b +√c =180

so,100+X+X=180

so,2x=180-100=80

so, X=80/2=40

so, √b=40

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