The horizontal and vertical components of a right triangle can be found by taking the vector to be analyzed as the hypotenuse. In a triangle, the bottom edge is the horizontal component and the side opposite the angle is the vertical component. Determine The Horizontal And Vertical Components Of Reaction A perpendicular component of a vector. For more details download the CAD file from our cadbull site. This can be used by architects and engineers. Download this 2d AutoCAD drawing file.