100 = x1
100 = y1
300 = x2
300 = y2
怎樣計出線(x1,y1) (x2,y2) 的長度
thx
怎樣計長度(中學數)
2007-02-26 11:22 am
回答 (3)
2007-02-26 11:39 am
✔ 最佳答案
畢氏定理: C^2 = A^2 + B^2C = (x1,y1) (x2,y2) 的長度
A = X2 - X1 = 300 - 100 = 200
B = Y2 - Y1 = 300 - 100 = 200
So, C^2 = 200^2 + 200^2
C^2 = 80,000
C = 282.84
2007-02-26 11:35 am
長度 = √[(x1 - x2)^2 + (y1 - y2)^2]
= √[(100 - 300)^2 + (100 - 300)^2]
= √(40000 + 40000)
= 282.843
= √[(100 - 300)^2 + (100 - 300)^2]
= √(40000 + 40000)
= 282.843
2007-02-26 11:33 am
(100+100)(300+300)
收錄日期: 2021-04-13 00:03:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070226000051KK00527