Q31:
A certain right triangle has sides of length x, y, and z, where x < y < z. If the area of this triangular region is 1, which of the following indicates all of the possible values of y ?
A. y >
B.
C.
D.
E. y <
Answer: A
怎么做的呢
选项在我这里显示不全,我只能看到完整的题目. 我想说一句的是,请大家注
意那个right triangle,是直角三角形的意思.其实这题根本没有想想那么复
杂.有余X<Y<Z,Z肯定是直角边,那么很容易就知道面积应该是1/2*X*Y=1 ,==>
推出XY=2,又因为X<Y,所以,Y>根号2.....
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