document.write( "Question 257084: exact value of sin(7pi/6) \n" ); document.write( "
Algebra.Com's Answer #189048 by drk(1908)\"\" \"About 
You can put this solution on YOUR website!
sin(7pi/6) is the same thing as sin(pi/6) but in Quadrant III.
\n" ); document.write( "sin(pi/6) = 1/2
\n" ); document.write( "Sin is negative in quadrant III, so,
\n" ); document.write( "sin(7pi/6) = -1/2
\n" ); document.write( "
\n" );