document.write( "Question 462549: A triangle has a 20 degree angle, a 40 degree angle and a 120 degree angle. The length of the side opposite the 20 degree angle is 3 inches. Find the lengths of the other two sides.\r
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document.write( "My answer I got was 2.52 and 3.92 \n" );
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Algebra.Com's Answer #322544 by lwsshak3(11628) ![]() You can put this solution on YOUR website! A triangle has a 20 degree angle, a 40 degree angle and a 120 degree angle. The length of the side opposite the 20 degree angle is 3 inches. Find the lengths of the other two sides. \n" ); document.write( "My answer I got was 2.52 and 3.92 \n" ); document.write( ".. \n" ); document.write( "Mark angles 20º, 40º and 120º, A, B and C, respectively. Mark corresponding opposite sides a=3, b, and c \n" ); document.write( "Using Law of Sines: \n" ); document.write( "sin A/a=sin B/b \n" ); document.write( "sin 20/3=sin 40/b \n" ); document.write( "b=3*sin 40/sin 20=5.64 \n" ); document.write( ".. \n" ); document.write( "sin A/a=sin C/c \n" ); document.write( "sin 20/3=sin 120/c \n" ); document.write( "c=3*sin 120/sin 20=7.60 \n" ); document.write( "ans: \n" ); document.write( "3 sides are: 3, 5.64, and 7.60 \n" ); document.write( " |