sin² 30°-cos45° ×tan60°
来源：学生作业帮助网 编辑：六六作业网 时间：2024/12/26 23:46:10
sin²30°-cos45°×tan60°sin²30°-cos45°×tan60°sin²30°-cos45°×tan60°sin²30°-cos45°×ta
sin² 30°-cos45° ×tan60°
sin² 30°-cos45° ×tan60°
sin² 30°-cos45° ×tan60°
sin² 30°-cos45° ×tan60°
=1/4-(√2/2)x(√3)
=1/4-√6/2
=1/4-√6/2