Expression 5: "x" squared plus "y" squared equals "r" squared Has graph. To audio trace, press ALT+T.x2+y2=r2L
5
Expression 6: left parenthesis, "x" minus left parenthesis, negative left parenthesis, "r" Subscript, "L" , Baseline minus "r" Subscript, "S" , Baseline , right parenthesis sin left parenthesis, StartFraction, "r" Subscript, "S" , Baseline Over "r" Subscript, "L" , Baseline , EndFraction "a" , right parenthesis , right parenthesis , right parenthesis squared plus left parenthesis, "y" minus left parenthesis, left parenthesis, "r" Subscript, "L" , Baseline minus "r" Subscript, "S" , Baseline , right parenthesis cos left parenthesis, StartFraction, "r" Subscript, "S" , Baseline Over "r" Subscript, "L" , Baseline , EndFraction "a" , right parenthesis , right parenthesis , right parenthesis squared equals "r" squaredx−−rL−rSsinrSrLa2+y−rL−rScosrSrLa2=r2S
6
Hidden Label: left parenthesis, negative left parenthesis, "r" Subscript, "L" , Baseline minus "r" Subscript, "S" , Baseline , right parenthesis sin left parenthesis, StartFraction, "r" Subscript, "S" , Baseline Over "r" Subscript, "L" , Baseline , EndFraction "a" , right parenthesis plus "r" Subscript, "S" , Baseline times sin left parenthesis, left parenthesis, 1 minus StartFraction, "r" Subscript, "S" , Baseline Over "r" Subscript, "L" , Baseline , EndFraction , right parenthesis "a" , right parenthesis , left parenthesis, "r" Subscript, "L" , Baseline minus "r" Subscript, "S" , Baseline , right parenthesis times cos left parenthesis, StartFraction, "r" Subscript, "S" , Baseline Over "r" Subscript, "L" , Baseline , EndFraction "a" , right parenthesis plus "r" Subscript, "S" , Baseline times cos left parenthesis, left parenthesis, 1 minus StartFraction, "r" Subscript, "S" , Baseline Over "r" Subscript, "L" , Baseline , EndFraction , right parenthesis "a" , right parenthesis , right parenthesis−rL−rSsinrSrLa+rS·sin1−rSrLa,rL−rS·cosrSrLa+rS·cos1−rSrLa