cos(-17/6π)+tan(-17/6π)

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 21:33:14
cos(-17/6π)+tan(-17/6π)
x)K/547;ߠ]$/!_7HV$A " fAeu27Sbf6yvPm|]C0S 4Inl

cos(-17/6π)+tan(-17/6π)
cos(-17/6π)+tan(-17/6π)

cos(-17/6π)+tan(-17/6π)
cos(-17/6π)+tan(-17/6π)
=-cos(π/6)+tan(π/6)
=-√3/2+√3/3
=-√3/6

cos(-17/6π)+tan(-17/6π)
=cos(7/6π-4π)+tan(1/6π-3π)
=cos(7/6π)+tan(1/6π)
=-√3/2+√3/3
=-√3/6