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Problem
Problem
Find the number of real solutions of the equation
(
cos
x
)
5
+
(
sin
x
)
3
=
1
(\cos x)^5 + (\sin x)^3 = 1
(
cos
x
)
5
+
(
sin
x
)
3
=
1
in the interval
[
0
,
2
π
]
[0, 2\pi]
[
0
,
2
π
]
.
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