Prove the following:
\[
\frac{\cos 4 x+\cos 3 x+\cos 2 x}{\sin 4 x+...
Prove the following:
\[
\frac{\cos 4 x+\cos 3 x+\cos 2 x}{\sin 4 x+\sin 3 x+\sin 2 x}=\cot 3 x
\]
\( \mathrm{P} \)
W.
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