Trigonometry and periodic functions

In summary: Just remember that the height is measured from the ground to the top of the wheel, so you need to subtract the radius (75 m) from the total height of the building (165 m). :)In summary, for a person who has ridden the Singapore Flyer for 24 minutes, starting at the 6 o'clock position, they would be at the 3 o'clock position and 90 m above the ground. The Flyer completes one rotation every 32 minutes and has a diameter of 150 m. Its total height is 165 m from the ground to the top of the wheel.
  • #1
mak23
5
0
!HELP!

The Singapore Flyer, until recently the world's largest Ferris wheel, completes one rotation every 32 minutes.1 Measuring 150 m in diameter, the Flyer is set atop a terminal building, with a total height of 165 m from the ground to the top of the wheel. When viewed from Marina Centre, it turns in the clockwise direction. State the o'clock position on the wheel and height above the ground of a person who has ridden the wheel for 24 minutes. Assume that the person boarded the wheel at the 6 o'clock position.i don't know how to do this problem.please help!and thanks in advance.
 
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  • #2
mak23 said:
!HELP!

The Singapore Flyer, until recently the world's largest Ferris wheel, completes one rotation every 32 minutes.1 Measuring 150 m in diameter, the Flyer is set atop a terminal building, with a total height of 165 m from the ground to the top of the wheel. When viewed from Marina Centre, it turns in the clockwise direction. State the o'clock position on the wheel and height above the ground of a person who has ridden the wheel for 24 minutes. Assume that the person boarded the wheel at the 6 o'clock position.i don't know how to do this problem.please help!and thanks in advance.

Hi mak23! Welcome to MHB! ;)

Let's see... it starts at the bottom position (6 o'clock), and makes a full turn in 32 minutes.
That means it's at the top after 16 minutes isn't it?
And that's at 165 m from the ground.
How high would it be anyway at the starting position?
We should be able to tell, shouldn't we? Since it's given that the wheel is 150 m in diameter.

It also means that after 8 minutes, it's at a quarter of its turn.
And at 24 minutes, it's at three quarters of its turn, which is what the problem is about.
Can we tell how high that would be?
 
  • #3
Thank you for the help!

I understand now.

so after 24 minutes the person should be at the 3'o clock position. And the person would be at a height of 75 m.

ahaa... since its on a building of 165 m, the person would be 165-75=90 m.Right?
 
  • #4
Yep. (Nod)
 

1. What is trigonometry?

Trigonometry is a branch of mathematics that deals with the relationships between the sides and angles of triangles. It is used to solve problems involving measurements of angles and distances.

2. What are periodic functions?

Periodic functions are mathematical functions that repeat their values at regular intervals. They are used to model phenomena that exhibit recurring patterns, such as waves, sound, and light.

3. What are the main trigonometric functions?

The main trigonometric functions are sine, cosine, and tangent. These functions are used to relate the sides and angles of a right triangle.

4. How are trigonometric functions used in real life?

Trigonometric functions are used in a variety of fields, including physics, engineering, and navigation. They are used to calculate distances, angles, and heights, as well as to model periodic phenomena.

5. What is the unit circle and how is it related to trigonometry?

The unit circle is a circle with a radius of 1 unit that is centered at the origin on a coordinate plane. It is used in trigonometry to relate the values of trigonometric functions to specific angles, making calculations easier.

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