(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)-√2/2=√3/2-√6/3-√2/2(5)sin²30°+2sin60°+tan45°-tan60°+cos²30°=1/4+√3+1-√3+3/4=1+1=2