搜搜做题作业网三角形Sin角和cos角怎么转换
来源：学生作业帮 编辑：搜搜做题作业网作业帮 分类：数学作业 时间：2024/07/11 22:05:32
三角形Sin角和cos角怎么转换
几个方法：
sin^2x + cos^2x = 1
sinx = cos(90 - x)
cosx = sin(90 - x)
sin(90 + x) = cosx
sin(270 + x) = - cosx
cos(90 + x) = - sinx
cos(270 + x) = sinx
sin^2x + cos^2x = 1
sinx = cos(90 - x)
cosx = sin(90 - x)
sin(90 + x) = cosx
sin(270 + x) = - cosx
cos(90 + x) = - sinx
cos(270 + x) = sinx