Its getting late so lets make this quick and lets talk about reference angles.
Steps: 1 find the original quadrant and sketch it.
2 positive or negative.
3 either subtract 360 or 180 until the angle is in between 0 and 90.
Example: Find the reference angle for sin 600
600-360=240 so now you know the original quadrant is 3
Sin is positive in Q3
240-180=60
Now we can know that the reference angle is sin60
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