Well, at point P, the velocity vector QP is perpendicular to the line QP, 1 so the sine of that angle is one.
点P，速度向量,垂直于直线，所以该角的正弦值为。
The state space may be thought of as a big vector space with each basis element spanning the possible states of one system element (say a memory register or the CAM Angle).
状态空间可能被认为是一个大向量空间，其每个基本元素跨越一个系统元素的可能状态(比方说内存寄存器或偏心角)。
METHODS Chromatogram can be treated as vector of hyperspace, and the similarity between them can be counted according to vectorial angle formula.
方法将色谱指纹图谱看作多维空间内的向量，利用向量夹角余弦的基本公式计算两个指纹图谱间的相似度；
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