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Determine whether 765° and 1485° are coterminal.
765° - 1485° = -720° = 360° (-2) = a multiple of 360°
formed by two rays that have a common endpoint.
Angle
Help James to identify positive and negative coterminal angles of -225° from the following.
135°, -585°
Two different angles with the same initial & terminal sides.
Coterminal Angles
The circle of radius 1 centered at the origin (0, 0) in the Cartesian coordinate system.
Unit Circle
The measure of a central angle that subtends (intercepts) an arc s equal in length to the radius r of the circle.
Radian
The two units used to measure an angle are:
Radians and Degrees
The _______ measure refers to the arc length s.
Linear
It is used as a variable in mathematics to represent an angle.
Theta
In terms of degrees, one complete counterclockwise revolution is _____° whereas in radians, one complete counterclockwise revolution is _____ .
360° and 2π
