document.write( "Question 930798: if measure of angle A=60 degrees and side AB=5, then side BC=? It is a right triangle with the 90 degree angle at the top point of the triangle. So the triangle has A on right point of triangle, B on top point of triangle(where 90 degree angle is) and C on left point of triangle. I tried to solve by using tan, but the answer is not correct. The answer sheet says the answer is 5 sq rt 3. We haven't been taught how to do sine or cosine yet so I don't believe that will help me. \n" ); document.write( "
Algebra.Com's Answer #565296 by mananth(16946)![]() ![]() You can put this solution on YOUR website! If B = 90 \n" ); document.write( "& A= 60 \n" ); document.write( "Then c=30 (A+C)=90\r \n" ); document.write( "\n" ); document.write( "AB = 5\r \n" ); document.write( "\n" ); document.write( "AB/BC= tan 30\r \n" ); document.write( "\n" ); document.write( "AB/tan 30 = BC\r \n" ); document.write( "\n" ); document.write( "5/(1/sqrt(3))=BC\r \n" ); document.write( "\n" ); document.write( "BC = 5 sqrt(3)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |