Question

In a A ABC, ZA=90°; AB = 5cm and AC=12cm. If AD 1 BC, then find the

value of AD.​

Answer 1

Answer:

ANSWER

Given, ∠A=90

∘

By Pythagoras theorem,

BC

2

=AB

2

+AC

2

BC

2

=5

2

+12

2

BC=13 cm

Area of triangle =

2

1

×base×height

Thus,

2

1

AB×AC=

2

1

AD×BC

5×12=13×AD

AD=

13

60

cm.