document.write( "Question 986747: In a triangle ABC, the angle at A is 57 degrees, the angle at B is 28 degrees, and the length of side AB is 3. To 2 decimal places, what is the length of side BC? \n" ); document.write( "

Algebra.Com's Answer #607544 by Fombitz(32388) $\"\"$ $\"About$

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Angle C is then,
\n" ); document.write( " $\"C=180-57-28\"$
\n" ); document.write( " $\"C=95\"$
\n" ); document.write( "Then by the law of sines,
\n" ); document.write( " $\"BC%2Fsin%28A%29=AB%2Fsin%28C%29\"$
\n" ); document.write( " $\"BC=AB%2A%28sin%28A%29%2Fsin%28C%29%29\"$
\n" ); document.write( " $\"BC=3%2A%28sin%2857%29%2Fsin%2895%29%29\"$
\n" ); document.write( " $\"BC=3%2A0.81487\"$
\n" ); document.write( " $\"BC=2.53\"$
\n" ); document.write( " \n" ); document.write( "

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