Question

In the adjoining figure triangle ABC is right angled at B and A =30 degree if BC =6cm find AB andAC.​

Answer 1

Answer:

Draw a right angled △ABC using given instructions:

Here sin30=

AC

BC

2

1

=

20

BC

Or BC=10 cm

By Pythagoras theorem:

(AB)

2

=(AB)

2

−(BC)

2

=(20)

2

−(10)

2

=300

AB=10

3

cm.

hope it helps you✌

Answer 2

Answer:

Draw a right angled △ABC using given instructions:

Here sin30=ACBC

21=20BC

Or BC=10 cm

By Pythagoras theorem:

(AB)2=(AB)2−(BC)2

=(20)2−(10)2

=300

AB=103cm.