Slove the equation:
sinθ = 2tanθ
sin cos tan 急!!!
2008-01-16 5:56 am
回答 (1)
2008-01-16 6:02 am
✔ 最佳答案
sinθ = 2tanθsinθ -2sinθ/cosθ = 0
sinθ(1- 2/cosθ)=0
sinθ=0 or cos θ =2 (.nej)
sinθ=0
θ=180n
N是整數
收錄日期: 2021-04-29 19:49:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080115000051KK03995