Enjoy the flight....
.... And, learn something new...
One more question:
A parallelogram has side lengths 12 and 15.
If the length of the longer diagonal is 20, what is the length of the shorter diagonal?
Law of Cosines lessons and practice|Learn about the ambiguous case and law of sines at regentsprep.org
Easy to use online law of sines and law of cosines calculators and formulas from calculatorsoup.com
Free law of sines & law of cosines worksheets (with answers) from kutasoftware.com
Law of Cosines Proof, law of sines formula, and worksheets from tutorvista.com
Mathplane introduction to vectors: notes, examples, and practice
<--- Practice Test
Math Comic #35 - "Study Break: Math Snacks (Trig Newtons)" - 6-3-12 (click lower right to view)