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1、 三角函数 | |
double sin (double);正弦 | |
double cos (double);余弦 | |
double tan (double);正切 | |
2 、反三角函数 | |
double asin (double); 结果介于[-PI/2, PI/2] | |
double acos (double); 结果介于[0, PI] | |
double atan (double); 反正切(主值), 结果介于[-PI/2, PI/2] | |
double atan2 (double, double); 反正切(整圆值), 结果介于[-PI, PI] | |
3 、双曲三角函数 |
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