trigonometry rules
三角函数的规则
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Until about 1450 spherical trigonometry consisted of loose rules based on Greek, Hindu and Arabic versions.
差不多直到1450年球面三角的内容由一些不严谨的法则组成，这此法则的基础是希腊、印度和阿拉伯译本。
youdao
No matter whether you use geometry, trigonometry or calculus, you use the simple rules of arithmetic.
无论你使用几何学，三角形学或者微积分法，你都。
Those applicants, he says, haven't studied trigonometry, "esoteric" vocabulary or grammar rules in years, nor do they have the time to do so now.
WSJ: Business School Bulletin: What's News from B-Schools
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