Trigonometry, the branch of mathematics concerned with specific functions of angles and their application to calculations. There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc).
Trigonometry is defined as the branch of math that deals with calculations related to the sides and angles of triangles. An example of trigonometry is what architects use to calculate distances.
