Odpowiedź:
Szczegółowe wyjaśnienie:
sin30° * cos60° - 2tg45° = (1/2) * (1/2) - 2 * (1) = 1/4 - 2 = 1/4 - 8/4 = - 7/4 = - 1 3/4
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Odpowiedź:
Szczegółowe wyjaśnienie:
sin30° * cos60° - 2tg45° = (1/2) * (1/2) - 2 * (1) = 1/4 - 2 = 1/4 - 8/4 = - 7/4 = - 1 3/4