spherical trigonometry

基本解释

Shenton's critics, it should be pointed out, can fall back on spherical trigonometry and astronomical observations that date right back to Aristotle in 330BC.
有必要說明一下，早在公元前300年的亞裡士多德時期，那時的球麪三角學和天文觀測結果就批駁了珊頓的地平論觀點。
In the past, in geodesic surveying, a system of formulas derived from spherical trigonometry was used. This method is much complicated and the precision of the results is not sufficiently high.
過去在大地測距中使用一套由球麪三角導出的公式、方法較繁而精度不夠高。
Methods of spherical trigonometry and direction cosine matrix were applied respectively to derive the bracket error, and the two methods had the same error formula and the same calculation results.
應用球麪三角法和方曏餘弦矩陣法分別推導出雙軸陀螺平台的支架誤差公式，發現由這兩種方法推導出來的公式計算結果是一致的。

the branch of trigonometry concerned with the measurement of the angles and sides of spherical triangles