Contact us
Choose a category below so we can get back to you as quickly as possible.
方向余弦就是一個向量和x軸、y軸、z軸夾角的余弦值(如果是平面的話就是和x軸、y軸夾角余弦).有一個性質:所有方向余弦的平方和等於1.平面方程的法向量的方向余弦就是平面方程的法向量與x、y、z三個坐標軸夾角余弦值,有三個.
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.