Stephanie's Reflection

you use a unit circle with the trig chart
it is also used when you want to change what quad you are in
and you can use it to figure out where sin, cos, etc. are positive and negative

to change what quad you are in, you can change the number to negative and add 360 or change the number to negative and add 180 (i forget the other one)

to figure out where sin, cos, etc. are positive and negative, you simply see what it equals (eg: sin = y/r means that wherever y is positive, sin is positive and wherever y is negative, sin is negative)