直角三角形的斜边是直角三角形中最长的边。
直角三角形的斜边是直角三角形中最长的边。 。
假定a,b和θ之间存在一个关系,这是事先所不知道的,这个关系可以是,三角形是直角三角形?
Now, let's say, actually, there is a relation between a, b,and theta that I didn't tell you about, namely, actually, I want to assume that it's a right triangle, OK?
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