document.write( "Question 1193132: 1.The sum of the sides of the triangle ABC is equal to 400 m. A = 38°, B = 58°. Find the side AC \n" ); document.write( "
Algebra.Com's Answer #825145 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "The law of sines says

\n" ); document.write( "\"a%2Fsin%28A%29=b%2Fsin%28B%29=c%2Fsin%28C%29\"

\n" ); document.write( "In words, that says that the ratio of the lengths of the 3 sides of the triangle is the same as the ratio of the sines of the 3 angles.

\n" ); document.write( "So find the lengths of the sides by dividing the perimeter into three parts in the ratio of the sines of the three angles.

\n" ); document.write( "\"sin%2838%29=0.61566\"
\n" ); document.write( "\"sin%2858%29=0.84805\"
\n" ); document.write( "\"sin%2884%29=0.99452\"

\n" ); document.write( "\"sin%2838%29%2Bsin%2858%29%2Bsin%2884%29=2.45823\"

\n" ); document.write( "\"400%2F2.45823=162.72\"

\n" ); document.write( "The side lengths are

\n" ); document.write( "\"162.72%2Asin%2838%29=100.18\"
\n" ); document.write( "\"162.72%2Asin%2858%29=137.99\"
\n" ); document.write( "\"162.72%2Asin%2884%29=161.83\"

\n" ); document.write( "CHECK:
\n" ); document.write( "\"100.18%2B137.99%2B161.83=400.00\"

\n" ); document.write( "AC is the side opposite angle B, which is the side of middle length, so

\n" ); document.write( "ANSWER: AC = 138 (rounded)

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