1. There are mistakes in the following calculation. Correct them.
Solve tanӨcosӨ = 0 for 0degree <= Ө <= 90degree
Solution:
tanӨcosӨ = 0
tanӨ =0 or cosӨ = 0
Ө =0degree or Ө =90degree
Ө = 0degree or 90degree
Find the mistakes(2) ^_^
2007-08-15 4:13 am
回答 (1)
2007-08-15 5:05 am
✔ 最佳答案
Version 1:tanӨcosӨ = 0
tanӨ =0 or cosӨ = 0
Ө =0degree or Ө =90degree
Ө = 0degree or 90degree (rejected)
By checking: tan 90 degree is undefined. Hence the answer is only 0 degree.
Or simply by Version 2:
tanӨcosӨ = 0
(sinӨ/cosӨ)*cosӨ=0
sinӨ=0
Ө=0 degree
參考: me
收錄日期: 2021-04-13 18:13:29
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070814000051KK05222