Question

in th figure angle A=60
AB=AC =7.2cm
a) what is the measure of angle
B?
b) find the length of BC
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Answer 1

Answer:

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Answer 2

Answer:

angle b = 60⁰ and bc = 7.2 cm

Step-by-step explanation:

given ,

angle a = 60⁰

AB = AC = 7.2 cm

So ,

angle B = angle C

so ,

180⁰ - 2 angle b = 60⁰

180⁰ - 60⁰ = 2 angle b

120⁰ = 2 angle b

60⁰ = angle b

hence it is equilateral triangle

then AC = AB = BC

So BC = 7.2 cm