QUESTIONS: maths
IN the figure ,tan(x-90')=
A. 3/5
B. 4/5
C. 3/4
D. 4/3
F.2 maths questions
2007-08-08 4:59 am
回答 (1)
2007-08-08 5:04 am
✔ 最佳答案
by Pythagoris theorem,height of trapezium = square root (5^2 - 3^2) = 4
so tan (x-90) = 3/4
收錄日期: 2021-04-13 00:58:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070807000051KK04901