Question

In the given figure, angle ABC =90°, Ac = 13cm, CD = 11cm, AD =20cm. Find BC and AB​

Answer 1

Answer:

AB = 24

BC = 13

Step-by-step explanation:

in triangle ABC by Pythagoras theorem

$13 {}^{2} =( x - 11) {}^{2} + (ab) {}^{2} \\ 169 = x {}^{2} + 121 - 22x + (ab) {}^{2} \\ x {}^{2} + 121 - 22x - 169 \\ x {}^{2} - 22x - 48 \\ x {}^{2} - 24x - 2x - 48 \\ x(x - 24) + 2(x - 24) \\ (x - 24)(x + 2) = 0 \\ x - 24 = 0 \\ x = 24 \\ ab = 24 \\ bc = x - 11 \\ 24 - 11 = 13$

Answer 2

Answer:

bc=5 ab=12

Step-by-step explanation:

try to solve it by pgt

find 1 side and then subtitude it into another