Question

∆ABC is a triangle , right angled at C. If AB = 13 cm , AC = 12 cm , find BC. ​

Answer 1

In △ABC,

⇒ ∠B=90

o

[ Given ]

⇒ AB=12cm and AC=13cm [ Given ]

Here, O is center of a circle and x is a radius.

⇒ (AC)

2

=(AB)

2

+(BC)

2

[ By Pythagoras theorem ]

⇒ (13)

2

=(12)

2

+(BC)

2

⇒ 169=144+(BC)

2

⇒ (BC)

2

=25

∴ BC=5cm