14
QuizMultiple Choice
Unit Test
Question 14 of 25 • LAUSD-Algebra II B (Prescriptive) - Summer
The blades of a windmill turn on an axis that is 30 feet from the ground. The blades are 10 feet long and complete 2 rotations every minute. Write a sine model, y = asin(bt) + k, for the height (in feet) of the end of one blade as a function of time t (in seconds). Assume the blade is pointing to the right when and that the windmill turns counterclockwise at a constant rate.
Answer
A
y = 30 sine (StartFraction pi Over 15 EndFraction t) + 10
B
y = 30 sine (StartFraction pi Over 15 EndFraction t) + 30
C
y = 10 sine (StartFraction pi Over 15 EndFraction t) + 10
D
y = 10 sine (StartFraction pi Over 15 EndFraction t) + 30