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三角函数往往同时涉及几个角变量和多种三角函数,而可供选用的三角公式又较多,因而对初学者来说,常常感到无从下手.本文通过实例介绍在求解三角问题时,如何利用角的关系,选择相应的解法.
Trigonometric functions often involve several angular variables and trigonometric functions at the same time, and there are more triangular formulae available for beginners. This article will explain how to use the example to solve the triangular problem. The relationship between angles, choose the appropriate solution.