document.write( "Question 1024162: find a pair of acute angles that satisfy the equation sin(3x+9)=cos(x+5) \n" ); document.write( "
Algebra.Com's Answer #639616 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Since sin x = cos (90-x), we have \n" ); document.write( "3x + 9 = 90 - (x+5) \n" ); document.write( "3x + 9 = 85 - x \n" ); document.write( "4x = 76 \n" ); document.write( "x = 19 \n" ); document.write( "so that \n" ); document.write( "sin 66 = cos 24 \n" ); document.write( " |