document.write( "Question 448794: Use the addition identity to find the exact value for sin 105°. Show the work. \n" ); document.write( "
Algebra.Com's Answer #309394 by lwsshak3(11628) ![]() You can put this solution on YOUR website! Use the addition identity to find the exact value for sin 105°. Show the work. \n" ); document.write( ".. \n" ); document.write( "Addition formula for sin: sin(s+t)=sin s cos t+cos s sin t \n" ); document.write( "For given problem: \n" ); document.write( "sin 105º=sin(45+60)=sin 45 cos60+ cos 45 sin 60 \n" ); document.write( "=√2/2*1/2+√2/2*√3/2 \n" ); document.write( "=√2/4+√6/4 \n" ); document.write( "=(√2+√6)/4 (ans) \n" ); document.write( " |