Applications of Trig 8.3

Question 1

If diameter of the wheel were 30 ft & the low stayed at 4ft, what would be the new equation?

Accepted Answer

h=19+15cos∏/6(t-4)

Question 2

Paddle wheel has 62' diam & makes a revolution in 8 sec, max height of 54'. What is NOT true?

Accepted Answer

B = 8

Question 3

At how many seconds will the riders of the ferris wheel be at 24 feet for the 4th time?

Accepted Answer

19.5

Question 4

What's the amplitude if max # in population is 500,000 and low, 5 years later, is 175,000?

Accepted Answer

162, 500 people

Question 5

Tide is in (4 m deep) at 7am and out (1 m deep) at 9pm the same day. What is true?

Accepted Answer

VS is up 2.5 meters

Question 6

Find the period from the given equation.

Accepted Answer

40

Question 7

At how many years does the fox population reach 700 for the 3rd time?

Accepted Answer

4.2 years

Question 8

A pebble is caught in treads of a tire as shown. At what height will it be after 8.5 seconds?

Accepted Answer

35cm

Question 9

Use the given function to determine the height after 15 seconds.

Accepted Answer

43.2

Question 10

2hrs after timing begins, temp is at low of 50. 3hrs later at high of 72. What's NOT true?

Accepted Answer

period is 5

Question 11

What is the next positive value of time not shown that the height will reach 23 feet?

Accepted Answer

13 seconds

Question 12

Where will Tarzan be after 9.5 seconds?

Accepted Answer

3 feet from the river bank, over land

Question 13

Equation represents a paddle wheel. What is the second time the paddle is going into the water?

Accepted Answer

17.9

Question 14

What is the equation of the depth of water in terms of time as the tide goes in and out?

Accepted Answer

d=1.3+.2cosπ/6(t-2)

Question 15

What is the y-value when timing begins?

Accepted Answer

-18.14

Questions 15