Question

∆ ABC is right angled at C. If AC=5 cm and BC = 12 cm, find the length of AB.​

Answer 1

Answer:

Vector Addition

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Given , ΔABC is right angled at C.

AC=5cm

BC=12cm

AB=?

Using Pythagoras theorem.

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c2=a2+b2

c=a2+b2

so in ΔABC

AB=(AC)2+(CB)2

AB=(5)2+(12)2

AB=25+144

AB=169

AB=13cm