ABCDEF is a regular hexago.It is given that (→AC)=a and (→AE)=b
(a)Express a and b in terms of (→AB) and (→BC) only
(b)Hence,express (→AB) and (→BC) in terms of a and b
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A.maths
2008-01-06 5:16 am
回答 (1)
2008-01-06 8:49 am
✔ 最佳答案
(a)a
= (→AC)
= (→AB) + (→BC)
b
= (→AE)
= 2 (→BC) - (→AB)
(b)
(→AB)
= (2a - b) / 3
(→BC)
= (a + b) / 3
收錄日期: 2021-04-29 19:57:54
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080105000051KK04308