Предмет: Геометрия, автор: Аноним

4. Даны точки (V 7;0)

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Ответы

Автор ответа: ГАЗ52
0

Даны точки (7; 0) и N(-7; 3). Найди координаты векторов VW , NV.

Каковы эти векторы:

Равные Сонаправленные. Противоположные

Равные по длинe.

Решение. Из координат конца вычесть координаты начала :

VN {-7-7;3-0} , NV{7+7;0-3} или

VN {-14 ;3} , NV{14;-3} .

Эти вектора противоположно направленные тк VN =-1• NV.

Эти вектора равны по длине.

VN =√( (-14)²+3²) =√(196+9) ,

NV=√(14²+(-3)²)=√(196+9).



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