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Byju's Answer
Standard X
Mathematics
Properties of 30°-60°-90° Triangles
Find the valu...
Question
Find the value of AD in the given figure.
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Solution
In
△
A
B
C
using Pythagoras theorem we have,
A
C
2
=
A
B
2
+
A
C
2
⇒
A
C
2
=
3
2
+
4
2
⇒
A
C
2
=
25
⇒
A
C
=
5
m
In
△
A
C
D
using Pythagoras theorem, we get,
A
D
2
=
A
C
2
+
C
D
2
⇒
A
D
2
=
5
2
+
12
2
⇒
A
D
2
=
25
+
144
A
D
2
=
169
⇒
A
D
=
13
m
.
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