This preview shows pages 1–7. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full DocumentThis preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: Radian Measure A ray , or halfline , is that portion of a line that starts at a point V on the line and extends indefinitely in one direction. The starting point V of a ray is called its vertex . V Ray Terminology If two lines are drawn with a common vertex, they form an angle . One of the rays of an angle is called the initial side and the other the terminal side . T e r m i n a l s i d e Initial Side Vertex Counterclockwise rotation Positive Angle Vertex Initial Side T e r m i n a l s i d e Clockwise rotation Negative Angle Vertex Initial Side T e r m i n a l s i d e Counterclockwise rotation Positive Angle An angle is said to be in if its vertex is at the origin of a rectangular coordinate system and its initial side coincides with with positive  axis. standard position x Initial side Vertex Terminal side x y When an angle is in standard position, the terminal side either will lie in a quadrant, in which case we say that the angle lies in that quadrant , or it will lie on the xaxis or the yaxis, in which case we say it is a quadrantal angle....
View
Full
Document
 Fall '08
 GARDNER
 Calculus, PreCalculus

Click to edit the document details