document.write( "Question 281002: sketch the triangle and use the law of cosines to find the indicated value.round your answer ro the nearest hundreth.\r
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document.write( "22)find the angle opposite the longest side in a triangle with sides of 43 ft ,48ft, and 65ft. \n" );
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Algebra.Com's Answer #204171 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! sketch the triangle and use the law of cosines to find the indicated value.round your answer ro the nearest hundreth. \n" ); document.write( "22)find the angle opposite the longest side in a triangle with sides of 43 ft ,48ft, and 65ft. \n" ); document.write( "---------------------- \n" ); document.write( "Since a^2 = b^2 + c^2 -2bc*cos(A) \n" ); document.write( "-- \n" ); document.write( "cos(A) = (b^2+c^2-a^2)/2bc \n" ); document.write( "----------------------- \n" ); document.write( "Your Problem: \n" ); document.write( "cos(A) = (43^2+48^2-65^2)/(2*43*48) \n" ); document.write( "--- \n" ); document.write( "cos(A) = -0.0174 \n" ); document.write( "--- \n" ); document.write( "A = cos^-1(-0.0174) = 91 degrees \n" ); document.write( "==================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |