document.write( "Question 197854: Would you please help me with this question..\r
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document.write( " In triangle ABC, AC = 18, BC =10, and cosC = 1/2. Find the area of triangle ABC to the nearest tenth of a square unit.\r
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Algebra.Com's Answer #148375 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Would you please help me with this question.. \n" ); document.write( "In triangle ABC, AC = 18, BC =10, and cosC = 1/2. Find the area of triangle ABC to the nearest tenth of a square unit. \n" ); document.write( "---------------- \n" ); document.write( "Assuming the triangle is a right triangle, since cos(C) = 1/2, \n" ); document.write( "sin(C) = [sqrt(3)]/2 \n" ); document.write( "------------------------------ \n" ); document.write( "Formula: \n" ); document.write( "Area = (1/2)ab*sin(C) \n" ); document.write( "Area = (1/2)*10*18 \n" ); document.write( "= 5*9*sqrt(3) \n" ); document.write( "= 77.94 sq. units \n" ); document.write( "=================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |