Xavier is riding on a Ferris wheel at the local fair. His height can be modeled by the equation H(t) = 20 cos pi over 15 + 30, where H represents the height of the person above the ground in feet at t seconds.

Question

anonymous · Answer

Assuming Xavier begins the ride at the top, how far from the ground is the edge of the Ferris wheel, when Xavier's height above the ground reaches a minimum?

anonymous · Answer

@aum

anonymous · Answer

@study100

anonymous · Answer

Is the equation missing the value t?

anonymous · Answer

Sorry, Its supposed to say (pi/15)t

anonymous · Answer

LIke this ?
$$H (t) = 20 \cos (\frac{ \pi }{ 15 } t)$$

anonymous · Answer

$$H(t)=20\cos [(\pi/15)*t]+30$$

anonymous · Answer

Yeah, like that!

anonymous · Answer

But + 30

anonymous · Answer

Ok 
H(t)= 20 cos ((pi/15)t) + 30

You know that the graph of cos pi fluctuates between 1 and -1 in the y direction, with -1 being the lowest point.  So guess what t would make cos the lowest?
Separate cos (pi/15) (t) = -1
pi/15 t = cos ^-1 (-1)
pi/15 t = pi
t = 15

Plug that back in the equation and find H(t) 
H(t) = 10

anonymous · Answer

the graph of cos (x) *

anonymous · Answer

THANK YOU!!!!!!!!!