PLEASE I NEED HELP WITH THIS WORKSHEET FROM PRE CALC, DUE TOMORROW
Can someone explain to me the process of how to do these kinds of problems? I really don’t get it...
Please?

13) 790°

14) 945°

15) -890°

16) -360°

17) 890°

18) -220°

Step-by-step explanation:

Please see the attached pictures.

Trace the lines and for every complete circle (4 quadrants), which I represented with a single colour, add 360°.

If it's just two quadrants, that's 180°.

One quadrant is 90°.

Some properties that might help:

- Adj ∠s on a straight line= 180°

- ∠s at a point= 360°

I've attached the maximum number of pictures so I can't draw on the questions anymore.

For question 18,

From 4th quadrant to 3rd quadrant, it is 180°.

The remaining value would be 90°-50°= 40°

Hence the measure of the angle is 180°+40°= 220°

If the angle moves clockwise from the starting point, it's a negative angle. That's why I added a minus sign for questions 15, 16 and 18.

Feel free to ask if you have any questions :)

chiken

step-by-step explanation: