# 2 of 2-Trig

TonyC
2 of 2--Trig

Kahleela starts the engine on her small airplane. The engine drives a prop with a radius of 8.5 feet and its centerline 11.5 feet above the ground. At idel, the prop rotates at a constant speed of @ 800 revs/minute. The height of one prop tip as a function of time is given by:
h=11.5+8.5sin(800t), where h is the height in feet and t is the time in minutes. When t= 12 minutes, what is h?

I came up with 7.3 feet......I was wrong....

Where did I stray? :yuck:

## Answers and Replies

hhh79bigo
Radians and degrees? What is the answer?

Last edited:
TonyC
a. 4.1 ft
b. 18.9 ft
c. 7.3 ft
d. 15.7 ft