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JEEMAIN and NEET
>>
JEEMAIN PAST PAPERS
>>
2003
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Q)
A square of side
a
lies above the
x
-axis and has one vertex at the origin. The side passing through the origin makes an angle
α
(
0
<
α
<
π
4
)
with the positive direction of
x
-axis. The equation of its diagonal not passing through the origin is :
( A )
y
(
cos
α
+
sin
α
)
+
x
(
sin
α
−
cos
α
)
=
a
( B )
y
(
cos
α
+
sin
α
)
+
x
(
cos
α
−
sin
α
)
=
a
( C )
y
(
cos
α
−
sin
α
)
−
x
(
sin
α
−
cos
α
)
=
a
( D )
y
(
cos
α
+
sin
α
)
+
x
(
sin
α
+
cos
α
)
=
a
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