document.write( "Question 1123205: A compass of length 9cm is being used to draw a circle of radius 2cm. At what angle must the arms be opened? \n" ); document.write( "

Algebra.Com's Answer #739491 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Is this a trig question?
\n" ); document.write( "If so,
\n" ); document.write( "The compass makes an isosceles triangle
\n" ); document.write( "that is 9-9-2
\n" ); document.write( "when it’s ready to trace a 2 cm radius circle
\n" ); document.write( "Drop a perpendicular from top
\n" ); document.write( "The angle compass makes with paper is defined as
\n" ); document.write( " $\"+cos%28+theta+%29+=+1%2F9+\"$
\n" ); document.write( " $\"+theta+=+83.62+\"$ degrees
\n" ); document.write( "If $\"+beta+\"$ is the top angle, then
\n" ); document.write( " $\"+beta+%2F2+=+90+-+83.62+\"$
\n" ); document.write( " $\"+beta%2F2+=+6.38+\"$
\n" ); document.write( " $\"+beta+=+12.76+\"$ degrees is
\n" ); document.write( "angle to spread the arms\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );