(cot60°-sin60°)÷(cos45°+1/2 tan45°-cot30°)大神们帮帮忙
【sin30°/(sin60°-cos45°)】—(根号下(1—tan60°)²)—tan45°
sin60 sin30 cos60 cos30 sin45 cos45 tan30 tan60 tan45°各等于多少
|cos45°-sin60°|+根号sin30°
cos60°.tan45°—sin60°.cos30°+sin45°.cos45°.需要步骤可以吧
sin60°/cos30°-tan45° “/”是分之的意思
根号【cos45°-cos30°】*2-tan60°分之tan45°+sin45°
(1)sin60°-tan45°; (2)cos60°+tan60°; (3)根号2 /2 sin45°+sin60°-
cos60°+tan60° 2/根号2sin45°+sin60°-2cos45°
2sin30°·cos45°-(sin60°)负二次方+根号3tan30°
计算:sin²30°+cos²45°+根号2sin60°×tan45°
(sin30°-cos45°)(cos30°+sin45°)/(cos45°的平方+tan30°*sin60°)-3ta
计算:sin60°-cos60°+2sin30°cos30° 根号三sin60°-根号2cos45°+根号8的立方