Question

In
ABC
9
eight angle triangle 2 B-90
If Ac = 13(m of AB = 12 com a find BC.​

Answer 1

Answer:

△ 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.

Step-by-step explanation:

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Answer 2

Answer:

(AC)2=(AB)2+(AC)2

13×13= 12×12+x

169=144+x2

x2=169-144

=25/5

=5