here are the exact directions i was given, i dont understand how to solve the problems when radians is given in a form such as 3.8 or 6.4.

A.) name two angles one positive and one negitive that are coterminal with the folowing :

1) 4.2 radians

2) 5.42 radians

B.) find the refrence angle

1) 4.2

2) 5.42

also, i need to find out which quadrant each one (4.2 and 5.42) is in but do not understand how to do that either.

thanks