find the value of each of the following expressions correct to 3significant figures.
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f2. maths.
2012-05-20 9:23 pm
回答 (2)
2012-05-20 10:36 pm
✔ 最佳答案
(a)7 tan10° + 3 tan45°
= 4.23 (to 3 sig. fig.)
=====
(b)
tan85°/(tan18° + tan67°)
= 4.26 (to 3 sig. fig.)
2012-05-20 14:36:19 補充：
Use calculator directly.
參考: 土扁, 土扁
2012-05-20 10:38 pm
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You may purchase a calculator.
For example, Casio fx-50FH
收錄日期: 2021-04-13 18:42:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120520000051KK00230