F4 MATH
回答 (2)
2011-05-11 6:12 am
✔ 最佳答案
tan可化解為sin/cosso 4cosx-3sin/cosx
4-3sins=sinx
2011-05-11 6:10 pm
Your question is not right.
If I put x = 0 deg
4cos 0 -3 tan 0 = sin 0
4(1) - 3(0) = 0
4 = 0
If I put x = 0 deg
4cos 0 -3 tan 0 = sin 0
4(1) - 3(0) = 0
4 = 0
收錄日期: 2021-04-29 16:56:55
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