wowzers Flashcards
It is a branch of mathematics that studies relationships between side lengths and angles of triangles
Trigonometry
What is the etymology of the word “trigonometry”
Tria - three
gonia - angles
metron - measure
Greek astronomer and mathematician considered as the founder of trigonometry
Hipparchus
It is a plane figure consisting of two rays having the same endpoints
The terminal side rotates to form the angle
Angle
Endpoints of an angle
Vertex
If an angle in standard position shares a terminal side with another angle
Co-terminal Angles
If the terminal side of an angle coincides with a coordinate axis
Quadrantal Angles
It is the region bounded by 2 radii and an arc intercepted by a central angle
Sector
It is the curved part
Arc length
It is the measure of how fast A moves on the arc to its new position
Linear Velocity
It is the measure of how fast angle AOA or theta is increasing
Angular Velocity
It is the basis for defining the circular functions
Unit Circle
Set of all points in a plan that are a fixed distance from a fixed point
Circle
Defined in terms of the coordinates of trigonometric points on the unit circle
Circular Functions
Unit measurement for angles
Radian
