2sin60°+cos45°-tan60°解方程
cos60°+tan60° 2/根号2sin45°+sin60°-2cos45°
(sin30°)/(sin60°−cos45°) - tan60° 等于多少?
sin60 sin30 cos60 cos30 sin45 cos45 tan30 tan60 tan45°各等于多少
【sin30°/(sin60°-cos45°)】—(根号下(1—tan60°)²)—tan45°
|cos45°-sin60°|+根号sin30°
根号【cos45°-cos30°】*2-tan60°分之tan45°+sin45°
2sin30°·cos45°-(sin60°)负二次方+根号3tan30°
(1)sin60°-tan45°; (2)cos60°+tan60°; (3)根号2 /2 sin45°+sin60°-
计算:sin60°-cos60°+2sin30°cos30° 根号三sin60°-根号2cos45°+根号8的立方
(sin30°-cos45°)(cos30°+sin45°)/(cos45°的平方+tan30°*sin60°)-3ta
根号3乘以括号2COS45°减SIN60°括号加4分之根号24 等于多少
sin45°/(cos60°-tan60°)+cos45°×cos30°=