Images COS 3П B SIN

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Cos 3п b sin. 2 Cos 3п b sin. Cos 3п b sin -3п/2+b. Cos 1/2. Cos 6a b cos 6a b.
2 Cos 3п b sin. Cos 3п b sin -3п/2+b. Cos 1/2. Cos 6a b cos 6a b.

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