Question

In a right triangle ABC, ∠B = 900 , if AC = 13 cm, BC = 5 cm, find AB.​

Answer 1

Answer:

AB= 12cm

Explanation:

a=x

b=5cm

c=13cm

By using Pythagoras theorem

a²+b²=c²

a²=√c²-b²

x²=√13²-5²

x²=√169-25

x²=144

x=12 cm

∴AB=12cm

Answer 2

$❥{\huge{\underline{\small{\mathbb{\pink{YOUR \ CORRECT \ ANSWER \ }}}}}}$

°°° Solution °°°

Verified by Toppr

Correct option isA12

△ ABC is a right-angled triangle.

By Pythagoras theorem,

  AC2=BC2+AB2

⇒132=52+AB2

⇒AB2=−(5)2+132

⇒AB2=−25+169

⇒AB2=144

⇒AB=144

⇒AB=12 cm.