document.write( "Question 436367: Find the exact value of y=arccos(tan7pi/4)? \n" ); document.write( "
Algebra.Com's Answer #301905 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Find the exact value of y=arccos(tan7pi/4)? \n" ); document.write( "----- \n" ); document.write( "1st: tan(7pi/4) = -1 \n" ); document.write( "--------------------------- \n" ); document.write( "2nd: arccos(-1) = 3.1416.. \n" ); document.write( "=============================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |