Math, asked by soumyasingh77, 4 months ago

In triangle ABC, AD perpendicular to BC, AB = 7.5 cm, AC = 10 cm, AD =6 cm.Find BC.Show that angle BAC =90°.



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Answered by tanuchauhan001
4

Step-by-step explanation:

in triangle abd

by Pythagoras theorm

7.5×7.5=6×6+BD×BD

56.25=36+BD2

20.25=BD2

BD=4.5

un triangle acd

10×10=6×6+ DC2

100=36+DC2

√64=DC

BC=8

BC+DC=8+4.5= 12.5=BC

Answered by ankita22cutepie
1

okkkk just wait di I am giving

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