Question

19. In Fig. 10.15, the angle BAC is a right angle and AD
is perpendicular to BC ; AB = 4 cm, AC = 3 cm and
BD = x. Calculate x.
a
64%
AD
ma​

Answer 1

Answer:

sum of all the angles of a triangle = 180 °

or, 4°+3°+x°=180°

or, 7°+x°=180°

or, x°=180°-7°

or, x°=173°

Answer 2

Answer:

AB÷BD=BC÷AB

BC=5

4÷BD = 5÷4

16=5BD

BD=16÷5