Question

In a right-angled triangle, right angled at B, if AB = 5 cm and AC = 13 cm, then BC is equal to​

Answer 1

Note:

Refer the attachment!

⭐Given:

• ∆ABC is a right angled triangle.

• <B=90°

• AB=5cm

• AC=13cm

⭐To Find:

• BC=?

⭐Solution:

It is given that ∆ABC is a right angled triangle.

Therefore,

By Pythagoras therom,

(AC) ²=(AB) ²+(BC) ²

(13)²=(5) ²+(BC) ²

169=25+(BC) ²

(BC) ²=169-25

(BC) ²=144

BC=12 cm

Answer 2

Step-by-step explanation:

AB^2+AC^2=BC^2

5^2+AC^2=13^2

25 +AC^2=169

AC^2=169-25

AC^2=144

AC=√144

AC=12