## Friday, August 7, 2009

### Pre-Calculus Help!!! Bearings/Navigation Problem!!!!!

Pre-Calculus Help!!! Bearings/Navigation Problem!!!!!?
You are the navigator for a flight from Mpls./St. Paul to Orlando. When the flight takes off, you are sent to take care of a problem in the passenger compartment. When you return 20 minutes later (20 minutes after the take-off) you realize the pilot has been flying a a bearing of 143 degrees and should be flying at a bearing of 168 degrees. 1. If the plane travels at 300 mph and it is 1300 miles from Mpls./St. Paul to Orlando, at what bearing should the pilot turn to correct the course? - Ok to answer this problem do I just do 168 degrees - 143 degrees = 25 degrees and is that the final answer??? Or is there more since it gives the speed of the plane and the distance??? 2. At what speed should the plane increase to in order to arrive in Orlando on schedule? - I don't even understand how I am supposed to know this because I don't even have the time when the flight took off and when they are supposed to arrive in Orlando. Or is this information technically not needed?? 3. If the plane flies at 30,000 feet, how many ground miles from Orlando should the plane start its descent in order to make a landing at an angle of 3.8 degrees with the ground?? - You use trig for this right???? Like SohCahToa??? then for the 3.8 degrees, which side of the triangle would have that angle??? Please will anyone help me with this?!?!?!?! I'm not looking for full answers just tips and ideas or equations I should use in order to solve this. I would like to try to solve it a little bit by myself but I just have no idea of where I should begin. Please and thank you in advance!!! ^_^
Mathematics - 2 Answers