2017年11月29日SAT官方每日一题---数学选择.

　　下面是2012年11月29日的SAT官方每日一题的内容，是关于数学方面的，题型是选择。SAT官方每日一题是collegeboard每天都会发布的题目，关于SAT考试的三个部分的各个题型。下面我们就一起来看一下这个SAT官方每日一题吧。

　　SAT官方每日一题之数学---选择：

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　　Mathematics > Standard Multiple Choice

　　Read the following SAT test question and then click on a button to select your answer.

　　Miguel iscentimeters tall. At 2:00 p.m. one day, his shadow iscentimeters long, and the shadow of a nearby fence post iscentimeters long. In terms of, what is the height, in centimeters, of the fence post?

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　The correct answer is C

　　Explanation

　　The situation described in the question can be pictured as in the figure below, whereis the height, in centimeters, of the fence post.

　　There are two right triangles in the figure. One triangle is formed by part of the line from the sun to point, the perpendicular from Miguel’s head to the ground, and Miguel’s shadow along the ground. The other triangle is formed by part of the line from the sun to point, the perpendicular from the top of the fence post to the ground, and the fence post’s shadow along the ground. Since these two right triangles share the acute angle at, they are similar triangles. Since the corresponding sides of similar triangles are in proportion, it follows that. Solving this equation for, the height, in centimeters, of the fence post, yields.

　　下面是一道和SAT官方每日一题相似的题目，供大家练习：

　　If , then

　　Answer Choices

　　(A)

　　(B)

　　(C)

　　(D)

　　(E)

　　The correct answer is A

　　Explanation

　　If , then by the commutative property of multiplication, . Multiplying each side of the latter equation by gives , so .

　　以上就是关于2012年11月29日SAT官方每日一题中数学部分的详细内容，包括了题目和选项以及答案，后面附有一道相关的练习题。大家可以在备考SAT的过程中关注SAT每日一题的内容，这样就可以更好有不间断的练习，也就能在日积月累的过程中得到提高。