## anonymous one year ago Choose the point on the terminal side of -210°.

1. anonymous

2. anonymous

3. freckles

I guess we are to assume r is 1

4. freckles

$x=r \cos(\theta) \\ y=r \sin(\theta)$

5. anonymous

1cos 1sin

6. freckles

or maybe r is suppose to be 2

7. freckles

I don't know r is not given

8. freckles

but the answers seems to suggest r=2

9. anonymous

which answer do you suggest i put?

10. freckles

enter in the r and enter the theta then you can find x and y

11. freckles

it is weird though they don't tell you what r is

12. anonymous

ugh this is so confusing

13. freckles

I gave you the equations

14. freckles

$x =r \cos(\theta) \\ y=r \sin(\theta) \\ r=2 \\ \theta=-210^o \\ \text{ you want \to find } (x,y)$

15. freckles

just replace r with 2 and replace theta with -210

16. anonymous

okay so: x=2cos(-210) y=2sin(-210)

17. freckles

yes

18. anonymous

19. anonymous

i got that^

20. freckles

you can use unit circle to get exact answer

21. anonymous

ok