摘要
本文通过复数的两种不同表达形式(代数式和三角式),利用二项式定理求其模,推导出勾股数组公式和三角函数的倍角公式。
This paper deduced the Pythagorean triple group trigonometric function via two different expressions (algebraic form and through the process of finding the modulus by using the binomial formula and the double angle formula for and trigonometric form) of complex numbers theorem.
出处
《重庆教育学院学报》
2008年第3期137-138,共2页
Journal of Chongqing College of Education
关键词
二项式定理
勾股数组
倍角公式
binomial theorem
Pythagorean triple group
double angle formula