(1999•上海)(1)计算:tan60°cot45°−sin60°;
【sin30°/(sin60°-cos45°)】—(根号下(1—tan60°)²)—tan45°
根号下(1-2tan60°+tan^260°)-tan60°计算过程
(2009•黄浦区二模)计算:[2tan60°+1+(π−3)
(1)sin60°-tan45°; (2)cos60°+tan60°; (3)根号2 /2 sin45°+sin60°-
(2010•天桥区二模)(1)计算:13+1+(3-π)0-sin60°
tan30° sin30° cos30° tan60° sin60° cos60° tan45°
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
(tan60°-1)的负一次方=?
(2011•江苏模拟)(1)计算:|1-3|-sin60°+(-25)0-124.
(2014•响水县二模)(1)计算:(12)2-2sin60°+12; &