Question

In the figure angle=60° AB=AC=7.2cm then what is the measure of angle B

Answer 1

Answer:

here is ur ans

Step-by-step explanation:

I hope u understand

Answer 2

Answer:

Step-by-step explanation:

Given: ∠A=60°

and AB=AC=7.2 cm

Now since AB=AC⇒∠ABC=∠ACB   (angles opposite to equal sides are equal)

Consider △ABC

By angle sum property of △

∠ABC+∠ACB+∠BAC=180°

⇒∠ABC+∠ABC+60°=180°   (given ∠BAC=60°)

⇒2∠ABC=120°

⇒∠ABC=60°

So,∠ABC=∠ACB=∠BAC =60°

Since all the angles of △ are 60° each.So triangle is Equilateral

⇒All the sides of △will also be equal

⇒AB=AC=BC=7.2 cm