For each angle (in radians) listed below, determine the signs of the coordinates in a unit circle.
1. The denominator says the the top half of the circle should be divided into
2. The numerator says go to the 4th piece starting from (
3. This angle is the 2nd quadrant so the signs are (
) for ( ).
Move clockwise from (
Divide half of the circle into
pieces. Every pieces is one time around the circle. intersects the unit circle at the point ( ), so the signs of the coordinates are ( ).