cos60°+sin45°×cos45°-tan60°×tan30°=?cos45°-cos60°分之1+sin30°分之1+cos²30°+sin²45°=?3tan30°+cot45°+cos30°+2sin60°-2tan45°=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/08 06:30:01
cos60°+sin45°×cos45°-tan60°×tan30°=?cos45°-cos60°分之1+sin30°分之1+cos²30°+sin²45°=?3tan30°+cot45°+cos30°+2sin60°-2tan45°=?
cos60°+sin45°×cos45°-tan60°×tan30°=?
cos45°-cos60°分之1+sin30°分之1+cos²30°+sin²45°=?
3tan30°+cot45°+cos30°+2sin60°-2tan45°=?
cos60°+sin45°×cos45°-tan60°×tan30°=?cos45°-cos60°分之1+sin30°分之1+cos²30°+sin²45°=?3tan30°+cot45°+cos30°+2sin60°-2tan45°=?
cos60°+sin45°×cos45°-tan60°×tan30°=?
1/2+(根号2/2)*(根号2/2)-根号3*(根号3/3)=1/2+1/2-1=0
cos45°-cos60°分之1+sin30°分之1+cos²30°+sin²45°=?
(根号2/2)-1/2分之1+1/2分之1+3/4+根号2/2=(2倍根号2+3)/4
3tan30°+cot45°+cos30°+2sin60°-2tan45°=?
3*(根号3/3)+1+(根号3/2)+2*(根号3/2)-2*1=2倍根号3+2分之根号3-1
cos60°+sin45°/cos60°-sin45° + cos60°-cos45°/cos60°+cos45°
cos30°* sin45 °+ cos60°* cos45°
sin45°+cos45°
sin45°×cos60°+sin45°
(cos60°+sin45°)/(cos60°-sin45°)+(cos60°-cos45°)/(cos60°+cos45°)等于多少?[刚才在百度直接算的-5.99999……我自己算的-6 =-=]
sin60°×cos60°+sin45°×cos45°-sin30°×cos30°等于多少
sin30° sin45° sin60° cos30° cos45° cos60° 以此类推,都等于多少
sin45°·cos45°-tan60°+sin60°/cos60°等于多少
sin45°/(cos60°-tan60°)+cos45°×cos30°=
计算cos45°-cos60°分之sin30°-2sin45°+根号3tan30°
cos45°•tan45°+ 根号3.tan30°-2cos60°•sin45°
sin45°/(cos60°-tan60°)+cos45°×cos30°=.
计算:cos45°.tan45°+ .tan30°-2cos60°.sin45°
COS45°×TAN45°+根号3×TAN30°-2cos60°×sin45°
cos60°+tan60° 2/根号2sin45°+sin60°-2cos45°
(1+Cos45°-Sin30°)(1-Sin45°+Cos60°)=
2cos60°+tan平方60°-4sin45°cos45°
sin60 sin30 cos60 cos30 sin45 cos45 tan30 tan60 tan45°各等于多少