Question

In Δ ABC, angle BAC= 90°, AD is the altitude if AB = 2√5, BD = 4. Then find BC and AC

Answer 1

Answer:

AB

2

=BC.BD [using the corollary]

(2

5

)

2

=BC×4

∴

4

20

=BC

∴BC=5

Now, CD=BC−BD=5−4=1

AC

2

=BC.CD

⟹AC

2

=5×1

∴AC=

5

Answer 2

Here's your answer ☺️

Step-by-step explanation:

Hope it helps you ‼️☺️