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Unformatted text preview: o your equation. cvalue: For the cosine graph, there is none. 2π
t + 15
5
2π
h(4) = −7 cos
(4) + 15
5
h(4) = 12.8m dvalue: The midline is at 15. Or, use 2nd max − min
22 − 8 14
=
= =7
2
2
2
2π 2π
b=
=
5
P h(t ) = −7 cos amplitude =
bvalue: max + min 22 + 8 30
midline =
=
=
= 15
2
2
2
2π
h(t ) = −7 cos
t + 15
5 The cosine pattern is upside down, so we need a
negative. Height (m) b) Trace Value x=4 d) 25 In the first cycle, the point is above 17 m between
1.48 s and 3.52 s, for a total of 2.04 seconds.
Since the second cycle is identical to the first, the
total time spent above 17 m is 4.08 s. 20
15
10
5 2 4 6 8 10 Time (s) Pre – Calculus Math 40S: Explained!
www.math40s.com 80 Trigonometry Lesson 8:
Part I – Ferris Wheel ANSWERS
3
0 5. a) The midline is at 15 m, and the radius is
13 m, so the maximum height is 28 m. b) The maximum occurs at the beginning
of the cy...
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This note was uploaded on 02/09/2011 for the course 168 comm 168 taught by Professor Kiscabean during the Winter '10 term at UCLA.
 Winter '10
 KISCABEAN

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