题目
题型:填空题难度:简单来源:不详
答案
=2.462÷(-5.62)+49.34
=-6.0516÷5.62+49.34
≈-1.077+49.34
=48.263
≈48.3.
故本题答案为48.3(保留3个有效数字).
核心考点
举一反三
A.-0.5976 | B.0.5976 | C.-0.5977 | D.0.5977 |
A.17° | B.18° | C.19° | D.20° |
A.cos15= | B.cos15 | C.Shift15 | D.15cos |
A.-0.5976 | B.0.5976 | C.-0.5977 | D.0.5977 |
A.17° | B.18° | C.19° | D.20° |
A.cos15= | B.cos15 | C.Shift15 | D.15cos |