(1)sin45°-cos60°+tan60°=

问题描述:

(1)sin45°-cos60°+tan60°=
还有:(2)cos²30°+sin²30°-tan45°=
(3)sin30°-tan30°+cos45°=
(4)cos30°-sin45°/sin60°-cos45°
(5)sin²30°+2sin60°+tan45°-tan60°+cos²30°

(1)sin45°-cos60°+tan60°=√2/2-1/2+√3(2)cos²30°+sin²30°-tan45°=3/4+1/4-1=0(3)sin30°-tan30°+cos45°=1/2-√3/3+√2/2(4)cos30°-sin45°/sin60°-cos45°=√3/2-(√2/2)/(√3/2)-√2...(1)(2)(3)(4)继续算成一个式子,怎么写??