Expression 13: "d" Subscript, "b" , Baseline equals StartFraction, "v" squared Over 2 left parenthesis, "a" plus 9.8sin left parenthesis, StartNestedFraction, "s" pi NestedOver 180 , EndNestedFraction , right parenthesis , right parenthesis , EndFraction equals 127.2 0 6 9 5 0 1 9 6db=v22a+9.8sinsπ180
equals=
127.2 0 6 9 5 0 1 9 6127.206950196
13
Expression 14: "a" equals 3.6a=3.6
00
2020
14
Expression 15: "y" equals "x" tangent left parenthesis, StartFraction, "s" pi Over 180 , EndFraction , right parenthesis left brace, "d" Subscript, "r" , Baseline cos left parenthesis, StartFraction, "s" pi Over 180 , EndFraction , right parenthesis less than or equal to "x" less than or equal to left parenthesis, "d" Subscript, "b" , Baseline plus "d" Subscript, "r" , Baseline , right parenthesis cos left parenthesis, StartFraction, "s" pi Over 180 , EndFraction , right parenthesis , right brace Has graph. To audio trace, press ALT+T.y=xtansπ180drcossπ180≤x≤db+drcossπ180
15
high beams at night
16
Expression 17: "y" equals 15 positive "x" tangent left parenthesis, left parenthesis, StartFraction, "s" pi Over 180 , EndFraction , right parenthesis left brace, 0 less than or equal to "x" less than or equal to 1 "r" , right brace , right parenthesis Has graph. To audio trace, press ALT+T.y=15+xtansπ1800≤x≤1r
17
Expression 18: "r" equals 122r=122
122122
140140
18
low beams at night
19
Expression 20: "y" equals 10 positive "x" tangent left parenthesis, StartFraction, "s" pi Over 180 , EndFraction , right parenthesis left brace, 0 less than or equal to "x" less than or equal to 1 "p" , right brace Has graph. To audio trace, press ALT+T.y=10+xtansπ1800≤x≤1p
20
Expression 21: "p" equals 61p=61
6161
140140
21
headlights distance at night
22
Expression 23: "y" equals 5 positive "x" tangent left parenthesis, StartFraction, "s" pi Over 180 , EndFraction , right parenthesis left brace, 0 less than or equal to "x" less than or equal to 1 "m" , right brace Has graph. To audio trace, press ALT+T.y=5+xtansπ1800≤x≤1m
23
Expression 24: "m" equals 107m=107
107107
140140
24
Position of object in the road that you need to stop for
25
Expression 26: "x" equals 140 left brace, 0 less than or equal to "y" less than or equal to 20 , right bracex=1400≤y≤20