2sin2pi over 11cos2pi over 11 Simplify using double angle formula?
回答 (3)
2016-11-28 10:34 pm
sin(2(2pi)/11=sin4pi/11)
2016-11-19 7:20 pm
sin2pi = 0
cos2pi = 1
2sin2pi / 11cos2pi / 11 = 0 / 11 / 11 = 0
Oh, did you mean 2sin(2pi/11) cos(2pi/11) ?
If so, where the heck are the parentheses ????
cos2pi = 1
2sin2pi / 11cos2pi / 11 = 0 / 11 / 11 = 0
Oh, did you mean 2sin(2pi/11) cos(2pi/11) ?
If so, where the heck are the parentheses ????
2016-11-19 7:13 pm
sin ( 4π / 11 )....ARE WE DOING YOUR HOMEWORK ?
收錄日期: 2021-04-23 23:52:41
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20161119110908AA7pJn7