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cocoapeebles3
 one year ago
Xavier is riding on a Ferris wheel at the local fair. His height can be modeled by the equation H(t) = 20cosine of the quantity 1 over 15 times t + 30, where H represents the height of the person above the ground in feet at t seconds.
Part 1: How far above the ground is Xavier before the ride begins?
Part 2: How long does the Ferris wheel take to make one complete revolution?
Part 3: 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?
cocoapeebles3
 one year ago
Xavier is riding on a Ferris wheel at the local fair. His height can be modeled by the equation H(t) = 20cosine of the quantity 1 over 15 times t + 30, where H represents the height of the person above the ground in feet at t seconds. Part 1: How far above the ground is Xavier before the ride begins? Part 2: How long does the Ferris wheel take to make one complete revolution? Part 3: 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?

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cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1. I just needed help figuring it out I have been stuck on it for hours and I thought openstudy would help but obviously not @IrishBoy123

cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1Okay for part 1 i think you just have to substitute in 0 for t. H(0)= 20cos(pi/15(o))+30 which is 50. But I'm not sure if that's right.

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1why not just draw the equation? i can guess sorta what you are trying to do, but that really defeats the point. loads of people here want to help and learn.

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439938025351:dw

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439938102822:dw

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1or post a url or do a screengrab or scribble it down and scan and link it

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439938283787:dw

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1i am sorry to be such a pain but, once you get this bit sorted, you will get loads of help!

cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439938250052:dw

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1an example of posting a screengrab https://gyazo.com/9bd2129de27eaf26d56f85c2ffee15eb

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1a url: http://openstudy.com/users/cocoapeebles3#/updates/55d3a6f1e4b0c5fe9806d2bc

cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1sorry I'm new to this

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1we all were once please stick with it your drawing is off the screen for me https://gyazo.com/944f3bbd967745366c90fa0c079f5f56

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1dw:1439938633443:dw

cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1which I think is equal to 50

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1and where is the \(\pi \) being brought in? it is not in the original post...

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1strongly suggest you close this and start a new thread with the same question i am pretty easy going but this is too much, even for me. having learned something about how to share info online, you will have better luck with a new thread, the audience will have less to guess. good luck, and wish you well!

cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1oh sorry the original equation is this\[H(t)= 20\cos(\pi/15\times t) + 30\]

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1thanks for that @cocoapeebles3 if this is right, \(\large H(t)=20cos(\frac{π t}{15})+30\) then as cos(0) = 1 you have \(h(0) = 20+30=50\) the *period* of the wheel can be got from \(\omega \ t = \frac{π }{15}t= \frac{2 \pi}{T} t \) \(\frac{π }{15}t= \frac{2 \pi}{T} t \implies T = 30 \) finally, \(10 \le h(t) \le 50\) simply because \(1 \le cos \le 1\)

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1there might be a load of jargon in there so please do persist if anything is unclear and you have to factor in errors on my part too cheers!

cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1I think I understand it all thank you so much!

cocoapeebles3
 one year ago
Best ResponseYou've already chosen the best response.1So for part 3 how would I word that?

IrishBoy123
 one year ago
Best ResponseYou've already chosen the best response.1for last part \(H = \pm 20 + 30\) because cosine goes from 1 to +1.
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