# Homework Help: Lost on Vector problem

1. Oct 8, 2006

### sunbunny

Hey, I'm completely stuck and lost on this problem.

The question is:

You are given a treasure map and it says "Start at the old oak tree, walk due north for 550 paces, then due east for 120 paces. Dig." But when you arrive, you find an angry dragon just north of the tree. To avoid the dragon, you set off along the yellow brick road at an angle 60 degrees east of north. After walking 400 paces you see an opening through the woods. Which direction should you go, and how far, to reach the treasure?

Note: the 60 degree angle is positioned at the stating position and the hypotenuse and the hypotenuse is the yellow brick road.

any help would be greatly appreciated! :)

2. Oct 8, 2006

### vaishakh

find the treasures distance in vector form, take north j and east as i.
Then also find the position vector of the place you reach through yellow bricks.
Suntract the position vectors. The way to fnd second pos vector is rcos at i and rsin at j

3. Oct 8, 2006

### sunbunny

thanks a lot, i'll give that a try :)