Question

in ∆abc , anglea=90, ab=5cm, bc=13cm and ad lamba bc . then the leght of ad is

Answer 1

answer 12

Step-by-step explanation:

ab2 = ac2 + bc2

13 2 = 5 2 +bc 2

169 = 25 + bc2

169 - 25 = bc2

144 = bc2

12 2 = bc2

12 = bc