document.write( "Question 1106077: 1. Find the angle with the smallest measure in triangle VUW. \r
\n" ); document.write( "\n" ); document.write( "2. Find the angle with the largest measure in UWX. \r
\n" ); document.write( "\n" ); document.write( "Here's the picture of the angles for the question I'm trying to solve for: \r
\n" ); document.write( "\n" ); document.write( "http://image.ibb.co/cmkkbm/5_5b.png\r
\n" ); document.write( "\n" ); document.write( "Any help is appreciated.
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Algebra.Com's Answer #721041 by KMST(5347)\"\" \"About 
You can put this solution on YOUR website!
The problem seems designed as an example of law of cosines.
\n" ); document.write( "Right triangles are easier to solve, but if you cannot find a right angle,
\n" ); document.write( "your tools are law of sines and law of cosines.
\n" ); document.write( "Law of sines applies easily when you have the measures of an angle and the opposite side. If you only have 3 sides, you use law of cosines.
\n" ); document.write( "Law of cosines is given as a formula like
\n" ); document.write( "\"a%5E2=b%5E2%2Bc%5E2-2%2Ab%2Ac%2Acos%28A%29\" that turns into \"a%5E2=b%5E2%2Bc%5E2\" when \"A=90%5Eo\" .
\n" ); document.write( "With that formula and the lengths of 3 sides, you call the angle you are looking for angle \"A\" and solve for A.
\n" ); document.write( "If you are supposed to write the formula, write it like the instructor or the book prefers it.
\n" ); document.write( "It could be \"c%5E2=a%5E2%2Bb%5E2-2%2Aa%2Ab%2Acos%28C%29\" , and you would be looking for angle \"C\" .\r
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\n" ); document.write( "\n" ); document.write( "1. Triangle VUW has side lengths \"9\" , \"9\" , and \"5\" .
\n" ); document.write( "The shorter side, with length \"5\" is opposite vertex U,
\n" ); document.write( "so angle \"U\" is the smallest angle,
\n" ); document.write( "and \"5\" is the side length that is squared on one the left side of the equal sign in the law of cosines formula.
\n" ); document.write( "\"5%5E2=9%5E2%2B9%5E2-2%2A9%2A9%2Acos%28U%29\"
\n" ); document.write( "\"25=81%2B81-162cos%28U%29\"
\n" ); document.write( "\"25=162-162cos%28U%29\"
\n" ); document.write( "\"-137=-162cos%28U%29\"
\n" ); document.write( "\"cos%28U%29=137%2F162\"
\n" ); document.write( "\"cos%28U%29=0.84568\" (rounded)
\n" ); document.write( "\"U=32.26%5Eo\" (rounded)
\n" ); document.write( "
\n" ); document.write( "2. The side lengths of triangle UWX are \"9\" , \"8\" , and \"7\" .
\n" ); document.write( "The longer side, with length \"9\" is opposite vertex X,
\n" ); document.write( "so angle \"X\" is the largest angle,
\n" ); document.write( "and \"9\" is the side length that is squared on one the left side of the equal sign in the law of cosines formula.
\n" ); document.write( "\"9%5E2=8%5E2%2B7%5E2-2%2A8%2A7%2Acos%28X%29\"
\n" ); document.write( "\"81=64%2B49-112cos%28X%29\"
\n" ); document.write( "\"81-113-112cos%28X%29\"
\n" ); document.write( "\"-32=-112cos%28X%29\"
\n" ); document.write( "\"cos%28X%29=32%2F112\"
\n" ); document.write( "\"cos%28X%29=0.2857\" (rounded)
\n" ); document.write( "\"X=73.40%5Eo\" (rounded)
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