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解直角三角形的依据是直角三角形中的边、角关系及其锐角三角函数.它们在数学竞赛中应用非常活跃.现以竞赛题为例,说明直角三角形的应用.
The basis for solving the right-angled triangle is the edge, the angle relation, and the acute angle trigonometric function in the right-angled triangle. They are very active in the mathematical competition. Take the contest as an example to illustrate the application of the right-angled triangle.