Trong không gian Oxyz, cho hai đường thẳng \(\left( {{d_1}} \right):\,\,\left\{ \begin{array}{l}x = 1 + 2t\\y = 2 + 3t\\z = 3 + 4t\end{array} \right.\,\,\,\left( {t \in \mathbb{R}} \right)\) và\(\left( {{d_2}} \right):\,\,\dfrac{{x - 3}}{4} = \dfrac{{y - 5}}{6} = \dfrac{{z - 7}}{8}\). Khẳng định nào đúng?
A.\(\left( {{d_1}} \right)\parallel \left( {{d_2}} \right)\)
B.\(\left( {{d_1}} \right) \equiv \left( {{d_2}} \right)\)
C.\(\left( {{d_1}} \right) \bot \left( {{d_2}} \right)\)
D.\(\left( {{d_1}} \right),\,\,\left( {{d_2}} \right)\)chéo nhau.
A.\(\left( {{d_1}} \right)\parallel \left( {{d_2}} \right)\)
B.\(\left( {{d_1}} \right) \equiv \left( {{d_2}} \right)\)
C.\(\left( {{d_1}} \right) \bot \left( {{d_2}} \right)\)
D.\(\left( {{d_1}} \right),\,\,\left( {{d_2}} \right)\)chéo nhau.
Loga
Hóa Học lớp 12
