计算:sin²30°+cos²45°+根号2sin60°×tan45°(cos²30°+cos²60°)/(tan60°×cos30°)+tan60°

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 15:19:13
计算:sin²30°+cos²45°+根号2sin60°×tan45°(cos²30°+cos²60°)/(tan60°×cos30°)+tan60°

计算:sin²30°+cos²45°+根号2sin60°×tan45°(cos²30°+cos²60°)/(tan60°×cos30°)+tan60°
计算:sin²30°+cos²45°+根号2sin60°×tan45°
(cos²30°+cos²60°)/(tan60°×cos30°)+tan60°

计算:sin²30°+cos²45°+根号2sin60°×tan45°(cos²30°+cos²60°)/(tan60°×cos30°)+tan60°
sin²30°+cos²45°+根号2sin60°×tan45°
=(1/2)²+(√2/2)²+√2×√3/2×1
=1/4+1/2+√6/2
=3/4+√6/2
(cos²30°+cos²60°)/(tan60°×cos30°)+tan60°
=( 3/4+1/4)/(√3×√3/2)+√3
=2/3+√3