Originally Posted by

**bradycat** I am having trouble understanding this problem.

It has to deal with either cosine or sine law.

The angle of depression of a fire noticed west of a fire tower is 6.2 degrees. The angle of depression of a pond, also west of the tower, is 13.5 degrees.

If the fire and pond are the same altitude, and the tower is 2.25 km from the pond on a direct line, how far is the fire from the pond?

So do I take the fire and pond are level together on the ground, on a horizontal plane from the angles noted above??

Not sure how to solve this, and do I have enough info??