trigonometry
柯林斯詞典
1. N-UNCOUNT Trigonometry is the branch of mathematics that is concerned with calculating the angles of triangles or the lengths of their sides. 三角學(xué)
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trigonometry /?tr?ɡ??n?m?tr?/
劍橋詞典
- a type of mathematics that deals with the relationship between the angles and sides of triangles , used in measuring the height of buildings , mountains , etc.
（數(shù)學(xué)中的）三角學(xué)
Trigonometry concerns the functions of angles , such as sine , cosine , and tangent . 三角學(xué)研究的是角的函數(shù)，例如正弦、余弦和正切。 返回 trigonometry