For 0≦x≦360,how many distinct roots does the equation cos x (sin x -1)=0 have?
回答 (1)
✔ 最佳答案
Sol
Cosx(Sinx-1)=0
Cosx=0 or Ssinx=1
(1) Cosx=0
x=90度 or x=270度
(2) Sinx=1
x=90度
2不同根
收錄日期: 2021-04-18 15:30:42
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