1. 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，你都用到了简单的算术方法。
2. Often inclined to layout avoids trigonometry zone very hard, so reasonable use these " blind angle " the task that also is stylist. 往往斜向的布局很难避免三角地带，所以合理利用这些“死角”也是设计师的任务。
3. An algorithm used trigonometry to passively locating a moving emitter with direction of arrival(DOA) and time difference of arrival(TDOA) of the emitter signal is given. 提出了一种利用平面解三角，并结合辐射源信号到达方向和脉冲到达时间差对运动辐射源进行单站无源定位的算法。
英英解释
n.
1. the mathematics of triangles and trigonometric functions
