Question

If BC=3 cm, AC=5 cm, D is the midpoint of AB, angle B=90° and then find the value of DC.​

Answer 1

Step-by-step explanation:

△ ABC is a right-angled triangle.

By Pythagoras theorem,

AC

2

=BC

2

+AB

2

⇒13

2

=5

2

+AB

2

⇒AB

2

=−(5)

2

+13

2

⇒AB

2

=−25+169

⇒AB

2

=144

⇒AB=

144

⇒AB=12 cm.

Answer 2

Answer:

ok

Step-by-step explanation:

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