document.write( "Question 1183312: A triangular piece of wood has side lengths 14 cm, 19 cm and 20 cm. The angle between the 14 cm and 19
\n" );
document.write( "cm sides need to be known to see if it will fit properly into a cabinet. What is the angle, accurate to one
\n" );
document.write( "decimal place, between the 14 cm and 19 cm sides? \n" );
document.write( "
Algebra.Com's Answer #813560 by ikleyn(52805)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "A triangular piece of wood has side lengths 14 cm, 19 cm and 20 cm. The angle between the 14 cm and \n" ); document.write( "19 cm sides need to be known to see if it will fit properly into a cabinet. \n" ); document.write( "What is the angle, accurate to onedecimal place, between the 14 cm and 19 cm sides? \n" ); document.write( "~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "Use the cosine law \r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " 20^2 = 14^2 + 19^2 - 2*14*19*cos(a).\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "where \"a\" is the sough angle between the 14 cm and 19 cm sides. It gives\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( " cos(a) =\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |