Recent content by tchouhan

I went to office hours, and I learned that it was just the Law of Cosines. such that: c^2 = (30^2+36^2-2(30*36)cos(ab).

Yeah I have, but I don't think I'm getting the angles correctly. Here's a photo, SF at the top left, SJ south, Tracy east: http://imgur.com/LSEgciu I'm also not entirely sure what sort of trig to use, only just learned what vectors were yesterday.

Homework Statement The distance traveled by an airplane flying from San Francisco International airport (SFO) to San Jose International (SJC) is 30 nautical miles 36° south of east. Flying from SJC to Tracy, the plane's displacement is 36 nautical miles 52° east of north. What is Tracy's...

so ##arctan(7.2)##? I am confused as to what you mean by what part of a circle is 7.2 degrees.

Homework Statement Eratosthenes measured the circumference of the Earth by noting that the Sun is at an angle of 7°12' = 7.2° ("one-fiftieth of a circle") south of the vertical in Alexandria at the same time of day and year that it is directly overhead in Syene. Syene is 5000 stades directly...

Alright, I've got it figured out. Thank you everyone, the conversions were going right over my head.

I'm mostly confused as to what units go with which. ##27/365.25## would give me the time in years. But then what do I convert the Earth radius to? Miles? Kilometers? And for the last part, ##1/365.25## which I then square gives me ##0.00273##. What is this number? Miles? KM?

Hello everyone, I'm in a beginner physics class at uni, and after going through this problem over and over, I figured I'd make an account and ask for help since I might be here often. Homework Statement The Moon's distance from Earth is approximately 60 Earth radii, and it takes the Moon...