## IsTim 4 years ago A skater travels in a straight line 8.5*10^2m[25 degress N of E] and then 5.6810^2m in a straight line [21 degrees E of N]. The entire motion takes 4.2 min. What is the skater's displacement?

1. IsTim

I've tried 2 different methods. Cos Law and Pythagorean Theorem. Re-doing Cos Law right now cause I think it was my calculator's fault (rads instead of degs)

2. IsTim

I'm done. Dissappointing end result.

3. IsTim

I got 1311.83m.

4. TuringTest

I got 786.24m

5. IsTim

1.3*10^3m.

6. TuringTest

I see... so I got it wrong and you got it right

7. IsTim

Really?

8. TuringTest

$1311.83m\approx1.3\times10^3m$so yeah, lol

9. IsTim

ok. What about the angle? correct one is 24 degrees E of S.

10. TuringTest

You need the components of your vector for the way I know how to do it, but I apparently made a mistake earlier...

11. IsTim

Ok. I'll try some method. If I have a problem. I'll ask again. Thanks for the help.

12. TuringTest

what help? haha

13. IsTim

Affirming my answer, and allowing me to stop working on that part.