Sometimes you may need to create a tangent plane to create extrudes and cut-outs relative to a cylindrical face. This is easily done in SolidWorks. Simply create a two-line sketch on a plane or a planar face, add an angular dimension to drive the angle between the lines, then create a plane that uses the cylindrical face and one of the end points of the sketched lines.
To see this in action, please watch the video below…