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Tg pi x. TG(2x+Pi/4)=-1. TG(X+Pi/2). TG(2x+пи/4)=-1. TG(X-Pi/3)=1.
TG(2x+Pi/4)=-1. TG(X+Pi/2). TG(2x+пи/4)=-1. TG(X-Pi/3)=1.

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