Expression 3: "x" equals 60 Has graph. To audio trace, press ALT+T.x=60
negative 10−10
6060
3
Expression 4: "x" equals 90 Has graph. To audio trace, press ALT+T.x=90
negative 10−10
9090
4
Expression 5: "x" equals 109.4 7 1 Has graph. To audio trace, press ALT+T.x=109.471
negative 10−10
109.4 7 1109.471
5
Expression 6: "a" equals left brace, alpha less than 60 : StartFraction, "r" Over sin left parenthesis, StartNestedFraction, alpha NestedOver 2 , EndNestedFraction , right parenthesis , EndFraction , alpha greater than or equal to 60 : 2 "r" , right bracea=α<60:rsinα2,α≥60:2r
