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AP EAMCET Engineering 2018 Apr 24 Shift 1 Paper
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© examsnet.com
Question : 29
Total: 160
In Δ ABC , if D and E are the mid points of the sides BC and CA respectively, then 2
(
−
A
D
+
−
E
B
)
=
3
−
A
B
3
2
−
A
B
2
−
A
B
3
−
B
C
Validate
Solution:
Consider the triangle given in the figure below
A
D
=
A
C
+
C
D
=
A
C
+
1
2
C
B
E
B
=
E
C
+
C
B
=
1
2
A
C
+
C
B
Add above two equation
A
D
+
E
B
=
3
2
A
C
+
3
2
C
B
2
(
A
D
+
E
B
)
=
3
A
B
© examsnet.com
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