Question

2. In AABC, AB = 6 √3 cms, AC = 12cms, BC = 6cms. Then the measure of angle A?
(A) 90
(B) 60
(C) 30
(D) 45°​

Answer 1

Answer:

Answer

Correct option is

C

90

o

Given:

In △ABC

AB=6

3

cm

AC=12cm

BC=6cm

Solution:

AC

2

=144

AB

2

=108

BC

2

=36

Since,

AC

2

=AB

2

+BC

2

∴ By Converse of Pythagoras Theorem,

△ABC is an Right Angle Triangle at B.

∴∠B=90

o