The expression \( 3\left\{\sin ^{4}\left(\frac{3 \pi}{2}-\alpha\right)+\sin ^{4}(3 \pi+\alpha)\r...

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The expression \( 3\left\{\sin ^{4}\left(\frac{3 \pi}{2}-\alpha\right)+\sin ^{4}(3 \pi+\alpha)\right\} \) \( -2\left\{\sin ^{6}\left(\frac{\pi}{2}+\alpha\right)+\sin ^{6}(5 \pi-\alpha)\right\} \) is equal to
(a) 0
(b) \( -1 \)
(c) 1
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