1·He received a low mark for trigonometry.
他的三角学分数很低。
—— 《新英汉大辞典》
2·Indeed, there are nearly 20 built-in functions for trigonometry.
实际上，它的三角学内置函数就有20余种。
3·Advanced math — XSLT can perform basic arithmetic easily enough, but it doesn't support trigonometry, exponential functions, logarithms, or other more advanced mathematical operators and functions.
高等数学——XSLT在基本数学方面游刃有余，但它不支持三角学、指数函数、对数或其他更为高级的数学运算符及函数。
4·You can’t do a calculus class without first taking (and understanding) an Algebra and a Trigonometry class.
没有三角学和代数学的知识你不会理解微积分。
5·Surveyors use geometry, algebra, and trigonometry, as well as a variety of technologies, to take exact measurements of the land and its features.
勘测人员利用几何，代数，三角学，以及各种技术，对土地及其特征进行精确的测量。