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JEEMAIN-2014
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Q)
The number of values of
α
in
[
0
,
2
π
]
for which
2
s
i
n
3
α
−
7
s
i
n
2
α
+
7
s
i
n
α
=
2
is :
(
a
)
6
(
b
)
4
(
c
)
3
(
d
)
1
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