Question

In triangle abc angle abc is equal to 90 degree from any point on ABC D is drawn perpendicular to AC if ad is equal to 10 cm is equal to 8 cm and BC is equal to 3 then find DB

Answer 1

Step-by-step explanation:

ΔABC is right angled at A. AD is perpendicular to BC.

ANSWER

In right angles triangle BAC, AB=5cm and AC=12cm

Area of triangle=

2

1

×base×height=

2

1

×AB×AC

=

2

1

×5×12=30cm

2

Now, in ΔABC,

Area of triangle ABC=

2

1

×BC×AD

⇒30=

2

1

×13×AD

⇒ AD=

13

30×2

=

13

60

cm