document.write( "Question 388913: find the third side of a triangle from these data:
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document.write( "1) two side of equal length of 2700 miles;
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document.write( "2) the side are separated by 1 degree.
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document.write( "3) what is the length of the 3rd. side?
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document.write( "4) what is the formula to solve the problem? \n" );
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Algebra.Com's Answer #275329 by Alan3354(69443) You can put this solution on YOUR website! This was done 1-2 days ago. \n" ); document.write( "--------- \n" ); document.write( "The bisector of the 1º gives 2 right triangles. \n" ); document.write( "1/2 the 3rd side = 2700*sin(0.5º) =~ 23.5616 miles \n" ); document.write( "x2 =~ 47.12 miles \n" ); document.write( "--------------------- \n" ); document.write( "Or, use the Cosine Law: \n" ); document.write( "s^2 = 2700^2 + 2700^2 - 2*2700*2700*cos(1º) \n" ); document.write( "Same answer. \n" ); document.write( "-------------- \n" ); document.write( "PS There is \"a formula\" to solve this problem, but it's the \"hard way\" to do it. \n" ); document.write( "Many problems don't have a formula, you have to figure them out. \n" ); document.write( " \n" ); document.write( " |