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Problems
Prove:
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
sin
x
−
sin
2
x
2
sin
x
+
sin
2
x
=
cot
2
(
2
x
)
Mathematics
Problem
Prove:
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
sin
x
−
sin
2
x
2
sin
x
+
sin
2
x
=
cot
2
(
2
x
)
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