# Thread: Modelling with trigonometric functions

1. ## Modelling with trigonometric functions

Hi,
I have this math problem from my textbook buti'm not really sure how I can get the original sine formula

Here is the question
A Ferris wheel has a diameter of 56m, and one revolution took 2.5 min to complete. Riders could see Niagara Falls if they were higher than 50m above the ground. Sketch cycles of a graph that represents the height of a rider above the ground, as a function of time, if the rider gets on at a height of 0.5m at t=0 min. Then determine the time intervals when the rider could see Niagara Falls.

So, I know the period must be 2.5 right? the diameter 56/2= 28 <--radius
but i'm not really sure how i'd go from there

thank you

2. Hello LostCase
Originally Posted by LostCase
Hi,
I have this math problem from my textbook buti'm not really sure how I can get the original sine formula

Here is the question
A Ferris wheel has a diameter of 56m, and one revolution took 2.5 min to complete. Riders could see Niagara Falls if they were higher than 50m above the ground. Sketch cycles of a graph that represents the height of a rider above the ground, as a function of time, if the rider gets on at a height of 0.5m at t=0 min. Then determine the time intervals when the rider could see Niagara Falls.

So, I know the period must be 2.5 right? the diameter 56/2= 28 <--radius
but i'm not really sure how i'd go from there

thank you
This was posted yesterday.

Grandad