Maths
2010-05-23 7:32 am
If the distance between the point A (k,0) and B(0,k) is 10,find the possible value of k.
回答 (1)
2010-05-23 7:50 am
✔ 最佳答案
Distance = sqrt[(k - 0)^2 + (0 - k)^2] = 10sqrt(2k^2) = 10
2k^2 = 100
k^2 = 50
k = +- 5sqrt2
參考: Prof. Physics
收錄日期: 2021-04-19 22:18:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20100522000051KK01836