## lalaloopsey 3 years ago 1) Change (8, 23°) into rectangular form. 2) Change (3, 2π) into rectangular form. 3) Change (5, 180°) into rectangular form.

1. Hero

1. Easy 2. Easier 3. Easiest

2. lalaloopsey

3. Hero

Nah, I'm good. Giving answers don't help anyone learn anything.

4. lalaloopsey

ok, then get off of my page and never comment again. @Hero

5. Hero

Are you threatening me?

6. lalaloopsey

good bye.

7. Hero

Bye

8. jim_thompson5910

(8,23 degrees) = (r, theta) r = 8 theta = 23 degrees ------------------------------ x = r*cos(theta) x = 8*cos(23) x = ??? y = r*sin(theta) y = 8*sin(23) y = ??? The answer will be in the form (x,y)

9. lalaloopsey

hmm..

10. jim_thompson5910

all you have to do is evaluate 8*cos(23) and 8*sin(23) using a calculator

11. lalaloopsey

i go -0.5

12. lalaloopsey

got*

13. jim_thompson5910

for which one, 8*cos(23) or 8*sin(23) ?

14. ChmE

15. lalaloopsey

16. ChmE

Nope, I don't remember how to do this

17. janessia

@jim_thompson5910 gae u the fomula all you have to do is finish the problem

18. Hero

@lalaloopsey, unblock me.

19. lalaloopsey

20. lalaloopsey

@Hero

21. Hero

I'll see what I can do, but unblock me

22. Hero

|dw:1354167570002:dw| r = 8

23. Hero

x = 8 cos (23) y = 8 sin (23)

24. Hero

All you have to do now is simply use your calculator. Make sure it's in degree mode. You can use the same method for the others

25. lalaloopsey

ok..can you set the other ones up?

26. Hero

You use the same exact method on the others. Well, the third one actually doesn't have a vertical component. But you probably already knew that.

27. lalaloopsey

no.. i didnt.

28. shamim

ok i wanna try 3rd problem

29. shamim

here r=5

30. shamim

$here \theta=180$

31. Hero

x = -5 y = 0

32. shamim

x=rcos180=5cos180=5(-1)=-5

33. Hero

High Schoolers have it so easy

34. Hero

This stuff is cake compared to University level

35. shamim

and y=rsin180=5sin180=5(0)=0

36. shamim

did u get my solution

37. Hero

Bro, you didn't need to write all of that. And no, she doesn't get it.

38. shamim

ok

39. shamim

i need graphical representation to make it clearer

40. Hero

There, we helped you with the 1st one and the third one @lalaloopsey . Now do the second one on your own.

41. shamim

|dw:1354170698514:dw|

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