22.If the arithmetic means of sin0 and tan45 is cos x,find x where 0 < x < 90
answers:60 How can find that??
(miss degree sign)
concerning arithmetic means pls
2007-05-26 9:14 pm
回答 (1)
2007-05-26 9:31 pm
✔ 最佳答案
arithmetic means of a set of real no:{a1,a2,a3,....,an}=summation(a1,a2,a3,....,an) /nSo, arithmetic means of sin0 and tan45 is : (sin0+tan45)/2=1/2=cos x
easy to get x=60 (special angle)
收錄日期: 2021-04-12 19:50:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070526000051KK01781