how many meters from the foot of the towe

Question

The top of a signal tower is 120 meters above sea level. The angle of depression from the top of tower to a passing ship is 25°. How man of the tower is the ship? y meters from the foot

Answer 1

Step 1: make sure your calculator is in degree mode. Hopefully you know how to draw the problem, and what an angle of depression is. 

 

The set up is tan(65)=x/120, so x=120tan(65)