To the nearest , what is the cosine formed from the origin to ? Assume counterclockwise rotation.

and is between and . What is the value of ?

Two drivers race to a finish line. Driver A drives north blocks, and east blocks and crosses the goal. Driver B drives the shortest direct route between the two points. Relative to east, what is the cosine of the angle at which Driver B raced? Round to the nearest .

Which of the following is equal to ?

The value of a cosine is positive in which quadrants?