document.write( "Question 115266: Find the area of the triangle ABC when c=12in, b=9in, angle A=60 degrees?\r
\n" ); document.write( "\n" ); document.write( "Find the area of the triangle ABC when three sides are a=9,b=12 and c=5\r
\n" ); document.write( "\n" ); document.write( "I need help with these, can someone show me step by step instruction thanks
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Algebra.Com's Answer #83842 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Area = (1/2)ab(Cos(C))
\n" ); document.write( "Find the area of the triangle ABC when c=12in, b=9in, angle A=60 degrees?
\n" ); document.write( "Area = (1/2)bc(Cos(A))
\n" ); document.write( "Area = (1/2)*9*12*Cos(60)
\n" ); document.write( "Area = 27 sq. in
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\n" ); document.write( "Find the area of the triangle ABC when three sides are a=9,b=12 and c=5
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\n" ); document.write( "SSS Triangle Area Formula: the square root of (S(S - a)(S - b)(S - c)) where a, b, and c are sides and S is (a + b + c)/2
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\n" ); document.write( "S= (9+12+5)/2 = 13
\n" ); document.write( "Area = sqrt[13*(13-9)(13-12)(13-5)]
\n" ); document.write( "Area = sqrt[13*4*1*8]
\n" ); document.write( "Area = sqrt[416]
\n" ); document.write( "Area = 20.4 sq units
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
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