Trigonometric (adjective)

1. Relating to or concerned with trigonometry.
2. Pertaining to triangles and their properties, especially the relationships between angles and lengths of sides.

Origin:

Early 17th century: from late latin trigonometria, from greek trigōnon 'triangle' + metron 'measure'.

Examples:

1. The trigonometric functions are sine, cosine, and tangent.
2. The mathematician made significant contributions to the field of trigonometric analysis.
3. The trigonometric identity relating the sine and cosine of a right triangle is very useful.
4. The trigonometric ratios are important in solving problems involving triangles.
5. The engineer used trigonometric calculations to determine the height of the building.