In
ABC
9
eight angle triangle 2 B-90
If Ac = 13(m of AB = 12 com a find BC.
Answers
Answered by
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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Answered by
0
Answer:
(AC)2=(AB)2+(AC)2
13×13= 12×12+x
169=144+x2
x2=169-144
=25/5
=5
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