document.write( "Question 149723: Find the area of triangle ABC if A=56 degrees, b=20 ft, and c=12 feet. Round to the nearest tenth. \n" ); document.write( "
Algebra.Com's Answer #109915 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Find the area of triangle ABC if A=56 degrees, b=20 ft, and c=12 feet. Round to the nearest tenth. \n" ); document.write( "Draw AC as the base (horizontal), which is side b = 20. Draw the altitude from vertex B to the base, call it point D. That makes a right triangle ABD, and BD = 12*sin(56). \n" ); document.write( "The area is bh/2, = AC*BD/2 \n" ); document.write( "=20*12*sin(56)/2 \n" ); document.write( "=120*sin(56) \n" ); document.write( "=99.5 square units \n" ); document.write( " |