document.write( "Question 970320: Two planes leave an airport at the same time, one flying due west at 500 km/h and the other flying due southeast at 300 km/h. What is the distance between the planes two hours later. What do I do if there is no angle because I have to use trig. Please help. \n" ); document.write( "
Algebra.Com's Answer #592969 by josgarithmetic(39625)\"\" \"About 
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One plane goes due west; and the other plane goes southeast. The angle is well specified. \r
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\n" ); document.write( "\n" ); document.write( "Put the vectors on a cartesian system with departure location at the origin. West is in the direction of the negative x-axis. Due southeast is in the middle between the positive x-axis and the negative y-axis.
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