If \( x+y=2 \pi / 3 \) and \( \sin x / \sin y=2 \), then....

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If \( x+y=2 \pi / 3 \) and \( \sin x / \sin y=2 \), then
(1) the number of values of \( x \in[0,4 \pi] \) are 4
\( \mathrm{P} \)
(2) the number of values of \( x \in[0,4 \pi] \) are 2
(3) the number of values of \( y \in[0,4 \pi] \) are 4
(4) the number of values of \( y \in[0,4 \pi] \) are 8


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