Question

Triangle ABC is right angles at c. If ac=5cm and bc=12cm,find the length of ab

Answer 1

Answer:

at point c there is right angle .

so,ac^2+bc^2=ab^2

ab^2=25+144

ab^2=169

ab=√169

ab=13cm

hope it helps u dear☺️☺️☺️

Answer 2

Answer:

AB = 13cm

GIVEN:-

∆ ABC is a right angled triangle at C

/_ C = 90°

AC = 5cm

BC = 12cm

TO FIND:-

l(AB) = ?

SOLUTION:-

∆ABC is right angled (given)

Therefore,By Pythagoras theorem

${(hyp.)}^{2} = {(side \: 1)}^{2} + {(side \: 2)}^{2}$

${(AB)}^{2} = {(AC)}^{2} + {( BC )}^{2}$

${(AB )}^{2} = {(5)}^{2} + {(12)}^{2}$

${(AB)}^{2} = 25 + 144 \\ = \: 169$

$AB = \sqrt{169}$

AB = 13cm