1.3-3sinθcosθtanθ
2.1+tan²θ
3.(1/2)tan²θ-1/2cos²θ
4.2cosθ-3sinθ/4cosθ
5.5sin²θ/cosθ-5sinθtanθ
6.(1/sinθ)-sinθ/tan²θ
7.5cos(90-θ)-(sin(90-θ)/2tan(90-θ)
8.3sin(90-θ)tanθ-2cos(90-θ)
9.cos²θ-sin²θ
1.(1-cos²θ/cosθ)+cosθ
收錄日期: 2021-04-13 15:28:50
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080426000051KK02971