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April 20, 2014

Homework Help: Pre Calculus 12

Posted by Shreya on Wednesday, January 23, 2013 at 10:47pm.

The height h, in metres, above the ground of a car as a ferris wheel rotates can be modelled by the function h(t) = 18cos(πt/80) +19

what is the minimum height of a car?
do i like subtract 19 from 18 ?

what is the maximum height of a car?
do i add the 19 to 18?

how long does it take for the wheel to revolve once?

80s?

The question below is a different question..

The period in degrees of the graph y = cos4x is?

Is it 45 degrees? I dont get how to solve this?

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