Вычислите (sin45° tg60°+ cos45° ctg30°)² - cos60°

Решение: (sin45° tg60°+ cos45° ctg30°)² - cos60° = (0.7071 * 1.732 + 0.7071 * 1.732)(0.7071 * 0.577 + 0.7071 * 1.732) - 0.5 = (1.2248 + 1.2248)(0.4083 + 1.2248) - 0.5 = 2.4496 * 1.6331 - 0.5 = 3.999 - 0.5 = 3.499

Ответ: 3.499