document.write( "Question 993872: A farmer has a triangular shaped field, FLD. DF-350m, FL= 240m and DL=400m. Calculate the angle to the nearest degree. \n" ); document.write( "
Algebra.Com's Answer #613070 by ikleyn(52796)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "A farmer has a triangular shaped field, FLD. DF-350m, FL= 240m and DL=400m. Calculate the angle to the nearest degree. \n" ); document.write( "----------------- \n" ); document.write( "There are 3 angles. Angle F is opposite the longest side. \n" ); document.write( "Use the Cosine Law: \n" ); document.write( "400^2 = 350^2 + 240^2 - 2*350*240*cos(F).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "I got m(LF) =~ 83° (approximately).\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "For the Cosine Law see, for example, the lesson Proof of the Law of Cosines revisited in this site.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |