## marihelenh one year ago A boy runs 30 m east, 40 m north, 50 m west. What is his net displacement?

1. marihelenh

@amistre64

2. amistre64

3. marihelenh

|dw:1440973275222:dw|

4. marihelenh

c is approximately 44.7 m or 45 m if rounded.

5. amistre64

6. marihelenh

It doesn't really say. It wants the distance in meters, but it also asks for the degrees (although I am not sure the degrees of what or how to get it).

7. marihelenh

Well the displacement I mean when I said distance.

8. amistre64

degrees are simple enough to obtain, but how to format it is not known to me

9. amistre64

let the start be 0,0 we end up at -20,40 the inverse tangent of (-4/2) gets us our radians, or degree, depending on the mode of the calculator

10. amistre64

some format in degrees are: n degree west of north

11. amistre64

towit, the degrees would be oriented as the inverse tangent of (2/4)

12. marihelenh

I believe that is what it is looking for. I just need to find the correct degrees, which I believe you gave me help with.

13. marihelenh

So the degrees would be 27?

14. amistre64

26.6 degrees west of north, yes

15. marihelenh

27 degrees west of north?

16. amistre64

if thats how accurate you need it to me, then sure

17. marihelenh

Oh, sorry. Didn't see that.

18. marihelenh

Thank you!

19. amistre64

youre welcome