"branch of mathematics that deals with relations between sides and angles of triangles," 1610s, from Modern Latin trigonometria (Barthelemi Pitiscus, 1595), from Greek trigonon "triangle" (from tri- "three" (see tri-) + gonia "angle" (see -gon)) + metron "a measure" (see meter (n.2)).
实用例句
1. We may determine the height of a mountain by trigonometry.
我们可用三角原理测定山的高度.
来自《简明英汉词典》
2. He received a low mark for trigonometry.
他的三角学分数很低.
来自《现代汉英综合大词典》
3. The climax of this work was the development of trigonometry.
三角术的发展是这项工作的高峰.
来自辞典例句
4. The height of the mountain has been determined by trigonometry.
该山的高度已用三角学测得.
来自辞典例句
5. Until about 1450 spherical trigonometry consisted of loose rules based on Greek, Hindu and Arabic versions.
