Question

In ∆ABC, AB = 6√3 cm, AC = 12 cm, and BC = 6 cm then mA

= ?​

Answer 1

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

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