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Problems
Mathematics
Mathematics
Problem
Solve over
0
≤
x
<
2
π
0 \leq x < 2\pi
0
≤
x
<
2
π
:
2
sin
x
+
sin
2
x
2
sin
x
−
sin
2
x
=
cot
2
(
x
2
)
\frac{2\sin x + \sin 2x}{2\sin x - \sin 2x} = \cot^2\left(\frac{x}{2}\right)
2
s
i
n
x
−
s
i
n
2
x
2
s
i
n
x
+
s
i
n
2
x
=
cot
2
(
2
x
)
.
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