Спростіть вираз: cos100 + cos110 cos210 + cos690 cos790

InolaRomanova InolaRomanova    2   26.10.2021 20:05    2

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nikvet nikvet  22.10.2020 17:25
Решите пример! 25+35:3+7-9+k-8+6+87-8+6-8+7-9+7+7+88-88+8+8+7-8+7+9-7+6+96+86-9+6-86+9-6+98+8+586+8-5+8+68+789+7+87+7+7+77+7+77+8+6+5+8+6+53++676+7+6+6+8+67+6+6+6+66+6+66+6+66+6+6+6+6+66+6+6+6+6+6+66+67+77+7+8+8+8+8+5+5+5+5+5+5+5+5+5+5+66+6+66+6+6+6+6+66+6+66+6666+6+6+6+6+6+6+66+6+6+6+6+6++6+66+6+6+6+6+6+6+6+6+6+66+6+6+6+6+6+6+6+6+9+99+9+9+9+9+9+9+9+99+9+9+9+9+9+99+9+99+9+9+9+9+99+9+9+9+9+9+9+9+9+9+99+9+9+9+9+9+99+9+9+9+9+99+9+9+99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999997777777777777788888888888888888888888i999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999799999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999899999999999999999999999999999999999999999999999999999999999999999999999999999998999999999999999999999999999999999999999999999999999999999999999999999999999998999999999999999999999999999999999999999999999899999999999999999999999999999999999999999899999999999999999999999999999999999999999999999999999999998999999999999999999999999999999999999999999999999999999998999999999999999999999999999999999999999999999999999998999999999999999999999999999999999999999999999899999999999999999999999999999999999999999989999999999999999999999999999999999999999999899999999999999999999999999999999999999999999999999999999999999=...