maths~~~~
2010-04-03 8:48 pm
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回答 (1)
2010-04-03 9:09 pm
✔ 最佳答案
sinx(cosx - 1) = 0sinx = 0 or cosx - 1 = 0
x = 180 , 360 or cosx = 1
x = 180° , 360° or x = 360° for 0°<x<=360°
x = 180° , 360°
2 roots
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100403000051KK00611