Photos 2T 4 5T

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2t 4 5t. CTG T= -5/12 ; 7п/2<t<4п. CTG -5/12 7п/2 t 4п. 7п/2. -П/2 2п.
CTG T= -5/12 ; 7п/2<t<4п. CTG -5/12 7п/2 t 4п. 7п/2. -П/2 2п.