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Tg 2t. 2cos0+5sin90-4tg180. Tg30г + tg60г=. 4tg180-2ctg90. Формула TG 180°.
2cos0+5sin90-4tg180. Tg30г + tg60г=. 4tg180-2ctg90. Формула TG 180°.

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