433 1) tg π + cos π; 3) tg π + sin π; 2) tg 0° - tg 180°; 4) cos π - tg 2π.

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1) \( \tan(\pi) + \cos(\pi) \)

\( \tan(\pi) = 0 \)

\( \cos(\pi) = -1 \)

\( \tan(\pi) + \cos(\pi) = 0 + (-1) = -1 \)

2) \( \tan(0^\circ) - \tan(180^\circ) \)

\( \tan(0^\circ) = 0 \)

\( \tan(180^\circ) = 0 \)

\( \tan(0^\circ) - \tan(180^\circ) = 0 - 0 = 0 \)

3) \( \tan(\pi) + \sin(\pi) \)

\( \tan(\pi) = 0 \)

\( \sin(\pi) = 0 \)

\( \tan(\pi) + \sin(\pi) = 0 + 0 = 0 \)

4) \( \cos(\pi) - \tan(2\pi) \)

\( \cos(\pi) = -1 \)

\( \tan(2\pi) = 0 \)

\( \cos(\pi) - \tan(2\pi) = -1 - 0 = -1 \)

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