document.write( "Question 1129377: The two sides of the triangle ABC has sides AB=22cm and AC=8. If the area of the triangle 34.98 cm², what is it's perimeter? \n" ); document.write( "

Algebra.Com's Answer #745936 by ikleyn(52803) $\"\"$ $\"About$

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\n" ); document.write( " $\"highlight%28cross%28The%29%29\"$ $\"highlight%28cross%28two%29%29\"$ $\"highlight%28cross%28sides%29%29\"$ $\"highlight%28cross%28of%29%29\"$ $\"highlight%28cross%28the%29%29\"$ Triangle ABC has sides AB=22cm and AC=8. If the area of the triangle 34.98 cm², what is it's perimeter?
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document.write( "Use the formula \r\n" );
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document.write( "   Area =  for the area of a triangle, \r\n" );
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document.write( "where \"a\" and \"b\" are two sides lengths and    is the angle between them.\r\n" );
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document.write( "Using given data, find .\r\n" );
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document.write( "Having  ,  find  = +/-.\r\n" );
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document.write( "    ===---> > > Notice that there is NO NEED to find  : all you need is . < < <---===\r\n" );
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document.write( "Then find the length of the third side using  the cosine law.\r\n" );
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document.write( "Then find the perimeter,\r\n" );
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\n" ); document.write( "\n" ); document.write( "By the way, since $\"cos%28alpha%29\"$ may have (and factually has (!)) TWO values at given $\"sin%28alpha%29\"$ , you will have
\n" ); document.write( "TWO possible values for the third side, and, correspondingly, TWO values for the possible perimeter.\r
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\n" ); document.write( "\n" ); document.write( "Regrading the solution by the tutor @Mathlover1, keep in mind that she loss one possible answer and makes
\n" ); document.write( "a lot of unnecessary calculations on her way (like finding $\"alpha\"$ ).\r
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