sin派/12-根号3 cos派/12的值

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/08 20:08:58
sin派/12-根号3cos派/12的值sin派/12-根号3cos派/12的值sin派/12-根号3cos派/12的值原式=1/2*(1/2*sinπ/12-√3/2*cosπ/12)=2(sinπ

sin派/12-根号3 cos派/12的值
sin派/12-根号3 cos派/12的值

sin派/12-根号3 cos派/12的值
原式=1/2*(1/2*sinπ/12-√3/2*cosπ/12)
=2(sinπ/12cosπ/3-cosπ/12sinπ/3)
=2sin(π/12-π/3)
=2sin(-π/4)
=2*(-√2/2)
=-√2