作业帮sin²45°-cos60°- tan45°分之cos30° +2sin²60°乘tan60°
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/01 07:34:37
sin²45°-cos60°- tan45°分之cos30° +2sin²60°乘tan60°
sin²45°-cos60°- tan45°分之cos30° +2sin²60°乘tan60°
sin²45°-cos60°- tan45°分之cos30° +2sin²60°乘tan60°
sin²45°-cos60°- tan45°分之cos30° +2sin²60°乘tan60°
=（根号3/2+3根号3/2)/(1/2-1/2-1)=-2根号3