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在单位圆中,我们可以应用三角函数线作图来直观地求解反三角函数的有关问题甚为方便。下面分类举例加以说明之。(一)、三角函数的反三角运算例1 求下列各式的值(1)arcsin(cos(8π)/7);(2)arcctg(tg2)
In the unit circle, we can use triangle function line drawing to intuitively solve the problems related to inverse trigonometric functions. The following classification examples illustrate. (A), the trigonometric function of the inverse trigonometry example 1 Find the following formulas (1) arcsin (cos (8π) / 7); (2) arcctg (tg2)