“angle”的概念、定义、习题解题方法及翻译-数学辞典

单词

angle

释义

angle

(between lines in space) Given two lines in space, let u1 and u2 be vectors with directions along the lines. Then the angle between the lines, even if they do not meet, is equal to the angle between the vectors u1 and u2 (see angle (between vectors)), with the directions of u1 and u2 chosen so that the angle θ satisfies 0 ≤ θ ≤ π/2 (θ in radians), or 0 ≤ θ ≤ 90 (θ in degrees). If l1, m1, n1 and l2, m2, n2 are direction ratios for directions along the lines, the angle θ between the lines is given by

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数学辞典收录了4151条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。