Homework Help: PHYSICS

Posted by Sharefa on Wednesday, February 29, 2012 at 1:35pm.

Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 28.0 in a direction 60.0 west of north. Jane walks 10.0 in a direction 30.0 south of west. They then stop and turn to face each other
**What is the distance between them?
**In what direction should Ricardo walk to go directly toward Jane?

PHYSICS - Steve, Wednesday, February 29, 2012 at 2:51pm
use law of cosines to get the distance:

d^2 = 28^2 + 10^2 - 2(10)(28)cos60°
= 604
d = 24.58

Let the triangle be TRJ, where R is where Ricardo ended up, T is the tree, and J is where Jane ended up.

To get the angle R, use the law of sines
sinR/10 = sin60°/24.58
sinR = .3523
R = 20.62°

Ricardo needs to walk E 50.62° S

If you have a hard time visualizing that, draw the diagram.
PHYSICS - Sharefa, Wednesday, February 29, 2012 at 4:50pm
it's showing that my answer is wrong.. thanks anyway
i need help pls! the due time is after 12 hours
PHYSICS - Sharefa, Wednesday, February 29, 2012 at 5:05pm
R is right but i want the right answer for the second part ( ricardo needs .... to walk) PLEASE HELP ME

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