1-2sin²π/12

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 03:30:07
1-2sin²π/12
x)35*SS64>ߠohdTETΆh `ab y1XhNqAb8%

1-2sin²π/12
1-2sin²π/12

1-2sin²π/12
1-2sin²π/12
=cosπ/6
=√3/2