Neither, it is a mathematical discipline.
plane trigonometry spherical trigonometry
The main kinds are plane trigonometry and solid trigonometry. The latter will include trigonometry in hyper-spaces.
Hipparchus is the father of trigonometry.
Period of a Periodic Function is the horizontal distance required for the graph of that periodic function to complete one cycle.
The sign function is used to represent the absolute value of a number when used in trigonometry. It is also referred to as the signum function in math.
The understanding of shapes and angles.
usually referred as the function COS
Neither, it is a mathematical discipline.
Trigonometry is the study of the relationships between the sides and the angles of triangles and with the trigonometric functions, which describe those relationships.
sine, cosine, tangent, cosecant, secant, cotangent.
The basic circular functions are sine, cosine and tangent. Then there are their reciprocals and inverses.
Simple harmonic motion - such as the motion of a simple pendulum, electromagnetic and other waves, tidal heights - may be modelled as sine (or cosine) curves. In these cases, the periodicity of the function is measured in units of time.
The reciprocal of any function f(x) is 1/f(x) provided that f(x) is non-zero. That applies to all relations in mathematics, not just trigonometry.
There are two types of functions in trigonometry: there are functions that are mappings from angles to real numbers, and there are functions that are mappings from real numbers to angles. In some cases, the domains or ranges of the functions need to be restricted.
plane trigonometry spherical trigonometry
The main kinds are plane trigonometry and solid trigonometry. The latter will include trigonometry in hyper-spaces.