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Byju's Answer
Standard XII
Mathematics
Basic Inverse Trigonometric Functions
Number of sol...
Question
Number of solutions of the equation
x
2
+
4
x
+
s
i
n
2
x
+
4
c
o
s
e
c
2
x
=
0
in
[
0
,
2
π
]
is /are___
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Solution
x
2
+
4
x
+
4
+
4
c
o
t
2
x
+
s
i
n
2
x
=
0
(
x
+
2
)
2
+
4
c
o
t
2
x
+
s
i
n
2
x
=
0
(
a
)
2
+
(
b
)
2
+
(
c
)
2
=
0
⇒
a
=
b
=
c
=
0
Hence no solution.
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