Images 1 2 TG CTG

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1 2 tg ctg. CTG 2 5x-ctg5x 0. 4ctg2x+CTG 2 2x-5 0. 5tg2x 4 8tgx.. Tg2x+ctg2x=0.
CTG 2 5x-ctg5x 0. 4ctg2x+CTG 2 2x-5 0. 5tg2x 4 8tgx.. Tg2x+ctg2x=0.

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