1/sin50°+√3/cos50°=(cos50°+√3sin50°)/sin50°*cos50° =4(1/2cos50°+√3sin50°)/2sin50°*cos50° =4sin(50°+30°)/sin100° =4sin80°/sin80° =4
sin50°分之一+cos50°分之根号三等于多少、
1/sin50°+√3/cos50°=(cos50°+√3sin50°)/sin50°*cos50° =4(1/2cos50°+√3sin50°)/2sin50°*cos50° =4sin(50°+30°)/sin100° =4sin80°/sin80° =4