(3) If the angle is in the second quadrant: sin=0.6 cos=-0.8 If the angle is in the fourth quadrant: sin=-0.6 cos=0.8.

(4) If the angle is in the second quadrant: sin=0.73 tan= 1.08 If the angle is in the fourth quadrant: sin=-0.73 tan=- 1.08.

1 1. If the angle is in three quadrants: cos= minus 2/3 times the root number tan = plus 4/4 root number 2.

If the angle is in four quadrants: cos= plus two thirds times the root number tan = minus two quarters root number 2.