Pre-Calculus

Series - represents the sum of the terms of a sequence

Trigometry - is a branch of mathematics that deals with the relationship of the triangle, angles, and their measurement

Radian - the standard unit of the angle.

Clockwise = negative

Counter = positive

Terminal side - the moving ray of an angle.

Arithmetic Sequence - A sequence in which each term after the first is obtained by adding a constant (called the common difference) to the preceding term.