3道ACT数学练习题及解析

信息来源：网络发布时间：2015-08-24

摘要：

本文为大家介绍的是3道ACT数学练习题及解析，大家可以参考一下，在备考时勤加练习，对大家的备考是有帮助的。

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ACT数学练习题及解析,ACT数学

　　下面就让小编来为大家介绍一下3道ACT数学练习题及解析的相关内容吧，大家要好好把握，希望能够给准备ACT考试的同学带来帮助。

　　Question 1: What is sec(a)sin(a) + csc(a)cos(a) , if a = 45o?

　　(a) √2

　　(b) 2

　　(d) 1/√2

　　(e) 1/2 Answer: sec(a)sin(a) + csc(a)cos(a) = [1/cos(a)]sin(a) + [1/sin(a)]cos(a) = sin(a)/cos(a) + cos(a)/sin(a) = (√2/2)/(√2/2) + (√2/2)/(√2/2) = 1 + 1 = 2.

　　Question 2: In the standard (x,y) coordinate plane, 3 corners of a square are (4,–3), (–4,3), and (–4,-3). What are the coordinates of the square’s fourth corner?

　　(a) (1/4, -1/3)

　　(b) (4, 3)

　　(d) (3, -4)

　　(e) (3, -4)

　　Answer:

　　The easiest way to solve this problem is to sketch the 3 corners of the square. We notice that the fourth corner of the square is (4, 3).

　　Question 3: Prizes totaling $60,000 were awarded unequally between 3 contestants. Which of the following choices could be the highest prize?

　　(a) $5,000

　　(b) $10,000

　　(d) $25,000

　　(e) $65,000

　　Answer: The highest prize should be higher than one third of $60,000 and lower than $60,000. The only answer that satisfies this condition is $25,000.

　　以上就是有关3道ACT数学练习题及解析的内容，希望大家能够用心体会，更多精彩内容小编稍后为您呈现。最后，前程百利祝大家在ACT考试中取得优异的成绩。