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AP and TS EAMCET Engineering Model Paper 10

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Question : 45 of 160
 
Marks: +1, -0
The angle between the diagonals of a quadrilateral formed by the lines
x
a
+
y
b
=1,
x
b
+
y
a
=1,
x
a
+
y
b
=2,
x
b
+
y
a
=2 is
Validate
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