| This method forces each pixel to belong to a unique line, which excludes jointive or secant lines. |
| Let P be a point outside a circle, let PA be a tangent line, and let PBC be a secant line. |
| Removable or welded paddles mounted on two rotating shafts with opposite and secant pitches improve the mixing quality. |
| Note that the air mass is approximately equal to the secant of the zenith angle. |
| In this projection the meridians are vertical and parallels having increased spacing in proportion to the secant of the latitude. |
| The secant and cosecant were not used by the early astronomers or surveyors. |
