trigonometry

n.

三角学；

1. He received a low mark for trigonometry.
   他的三角学分数很低。
2. The height of the mountain has been determined by trigonometry.
   该山的高度已用三角学测得。

Trigonometry in Lorentzian Geometry
Fuzzy Qualitative Trigonometry
Fuzzy Qualitative Trigonometry
geosphere: Spherical Trigonometry
An extended operator trigonometry
Divine proportions: Rational trigonometry to universal geometry
Trigonometry of spacetimes: a new self-dual approach to a curvature/signature (in)dependent trigonometry
A method of spatial reasoning based on qualitative trigonometry
Commutative Extended Complex Numbers and Connected Trigonometry
The shape invariant of triangles and trigonometry in two-point homogeneous spaces