document.write( "Question 247700: Sketch the triangle and use the Law of Cosines to find the indicated value. Round your answer to the nearest hundredth. \r
\n" ); document.write( "\n" ); document.write( "1. Find the third side of a triangle with sides of 19 m and 16 m and an included angle of 43. \r
\n" ); document.write( "\n" ); document.write( "2.Find the third side of a triangle with sides of 35 ft and 26 ft and an included angle of 16.\r
\n" ); document.write( "\n" ); document.write( "3 Find the third side of a triangle with sides of 120 cm and 100 cm and an included angle of 47.\r
\n" ); document.write( "\n" ); document.write( "4.Find the angle opposite the longest side in a triangle with sides of
\n" ); document.write( " 43 ft,48 ft, and 65 ft.\r
\n" ); document.write( "\n" ); document.write( "5 Find the two smaller angles in a triangle with sides of 7in., 7in., and 13 in. \n" ); document.write( "
Algebra.Com's Answer #180609 by richwmiller(17219)\"\" \"About 
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Find the third side of a triangle with sides of 19 m and 16 m and an included angle of 43.
\n" ); document.write( "the law of cosines reduces to this for the third side when you know two sides and the included angle.
\n" ); document.write( "c=sqrt(a^2+b^2-2abcos(angle))
\n" ); document.write( "c=sqrt(19^2+16^2-2(19)(16)cos(43))
\n" ); document.write( "which works out to
\n" ); document.write( "c=sqrt(617-608cos(43))
\n" ); document.write( "cos43=0.555113302
\n" ); document.write( "#4 The longest side of a triangle will always be opposite the largest angle and the smallest side will always be opposite the smallest angle.
\n" ); document.write( "#5 two sides are equal so two angles will be equal\r
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