已知sin(x+派/6)=-3/5 求cos(x+派/6)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/09 12:43:03
已知sin(x+派/6)=-3/5求cos(x+派/6)已知sin(x+派/6)=-3/5求cos(x+派/6)已知sin(x+派/6)=-3/5求cos(x+派/6)cos(x+派/6)=√[1-s

已知sin(x+派/6)=-3/5 求cos(x+派/6)
已知sin(x+派/6)=-3/5 求cos(x+派/6)

已知sin(x+派/6)=-3/5 求cos(x+派/6)
cos(x+派/6)
=√[1-sin²(x+派/6)]
=±4/5