Question

Construct a triangle abc such that ab3.2cm. bc 3.9 cm and angle b 12o degree

Answer 1

Answer:

In triangle in △ ABC, by Pythagoras theorem

AC

2

=AB

2

+AC

2

Given, AB=5 cm, BC=x

5

2

=x

2

+3

2

x

2

=5

2

−3

2

=25−9=16

x=

16

=4 cm

Hence, AB=4 cm.