document.write( "Question 1008689: A pilot flies in a straight path for 1 hour and 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 hours in the new direction. If she maintains a constant speed of 625 miles per hour, how far is she from her starting position?\r
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document.write( "I found an answer but it was wrong, I would appreciate if you could point out the mistake.\r
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document.write( "convert hours into miles\r
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document.write( "(1.30Hrs * 625miles) / 1hr = 812.5 miles
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document.write( "(2 hrs * 625 miles) / 1hr = 1250 miles\r
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document.write( "Use Law of cosine to find missing side\r
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document.write( "A^2=B^2+c^2-2BC(cosA)
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document.write( "A^2=812.5^2+1250^2-2(812.5)(1250)cos10
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document.write( "A^2=222265...
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document.write( "A=sqrt(222265)= 471.45
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Algebra.Com's Answer #624258 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! A pilot flies in a straight path for 1 hour and 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 hours in the new direction. If she maintains a constant speed of 625 miles per hour, how far is she from her starting position?\r \n" ); document.write( "\n" ); document.write( "I found an answer but it was wrong, I would appreciate if you could point out the mistake.\r \n" ); document.write( "\n" ); document.write( "convert hours into miles\r \n" ); document.write( "\n" ); document.write( "(1.30Hrs * 625miles) / 1hr = 812.5 miles \n" ); document.write( "(2 hrs * 625 miles) / 1hr = 1250 miles\r \n" ); document.write( "\n" ); document.write( "Use Law of cosine to find missing side\r \n" ); document.write( "\n" ); document.write( "A^2=B^2+c^2-2BC(cosA) \n" ); document.write( "A^2=812.5^2+1250^2-2(812.5)(1250)cos10 \n" ); document.write( "A^2=222265... \n" ); document.write( "A=sqrt(222265)= 471.45 \n" ); document.write( "============================ \n" ); document.write( "It's not cos(10). The interior angle is 170 degs. \n" ); document.write( " \n" ); document.write( " |