triangle ABC is right angled at A. AD is perpendicular to BC. if ab e is equal to 5 cm BC is equal to 13 cm ac is equal to 12cm .
find the area of ABC also find length of AD
Answers
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Step-by-step explanation:
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.
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