我想問下
sin x / (sin 150 - x) = 1.116
呢條應該點解
sin 既問題
2010-03-06 6:21 pm
回答 (2)
2010-03-06 11:09 pm
2010-03-10 1:27 am
sin x / sin (150 - x) = 1.116
sin x / (sin150 cos x - cos150 sin x )=1.116
0.5 tan x + (開方3) / 2 = 1.116
x = 26.56.....
sin x / (sin150 cos x - cos150 sin x )=1.116
0.5 tan x + (開方3) / 2 = 1.116
x = 26.56.....
收錄日期: 2021-04-13 17:09:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100306000051KK00354