(sin30)+(cos45）+√3*sin60*tan45 =（1/2）+（√2/2）+√3x√3/2x1 =1/4+1/2+3/2 =3/4+6/4 =9/4 =2.25 亲,请您点击【采纳答案】,您的采纳是我答题的动力,