1.1200/sin60=800(根号3)2.设坡角=m则：tanm=1/2.4sinm/cosm=1/2.4(sinm)^2/(cosm)^2=1/2.4^2=1/5.76(sinm)^2/(1-(sinm)^2)=1/5.76(sinm)^2=1/(1+5.76)=1/6.76sinm=1/2.6高度上升: 130*(1/2.6)=50米
