(1)计算:sin60°•cot30°−2cos45°+12(π−3)0+tan45°
【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°
计算:sin²30°+cos²45°+根号2sin60°×tan45°
(1)sin60°-tan45°; (2)cos60°+tan60°; (3)根号2 /2 sin45°+sin60°-
2sin30°·cos45°-(sin60°)负二次方+根号3tan30°
cos60°.tan45°—sin60°.cos30°+sin45°.cos45°.需要步骤可以吧
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
sin60°/cos30°-tan45° “/”是分之的意思
根号【cos45°-cos30°】*2-tan60°分之tan45°+sin45°
(2010•天桥区二模)(1)计算:13+1+(3-π)0-sin60°