compound angle formulae (in trigonometry) The trigonometric functions of the sum or difference of two angles can be expressed in terms of the functions of the individual angles. See appendix 14.
compound angle formulae
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。