finals

• A Unit Circle is a circle whose center is at the origin and with a radius of 1 unit. Every point on the unit circle

  satisfies the equation: x2 + y2 = 1.
• y

  The terminal point (x,y) is referred to as the Trigonometric Point which is usually denoted by

  P(0), that is P(0) = (x, y).
• Circular functions are defined in terms of the coordinates of trigonometric points on the unit circle.
• Circular Functions are repetitive in nature. Functions whose values are cyclical or repetitive are called periodic functions.
• DOMAIN

  Defined as the set of all possible values of x-coordinate, or the set of all inputs for which the function is defined.
• RANGE

  Defined as the set of all possible values of y-coordinate, or the set of all outputs for which the function is defined.