Question

In Fig. 10.142, if AC is bisector of ∠BAD such that AB=3 cm and AC=5 cm, then CD=
A. 2 cm
B. 3 cm
C. 4 cm
D. 5 cm

Answer 1

Answer:

4cm use Pythagores theorom

Answer 2

Answer:

then CD will be 4cm

by using Pythagoras theorem

hypotenuse ^2= base ^2+ perpendicular ^2

5^2= 3^2 + p^2

25= 9 + p^2

25-9 = p^2

16 = p^2

p= 4

so your answer is 4.