 |
|---|
| PAGE: 533 | SET: Exercises | PROBLEM: 45 |
A cruise ship maintains an average speed of 
in going from San Juan to Barbados, West Indies, a distance of 
.
To avoid a tropical storm, the captain heads out of San Juan in a direction of 
off a direct heading to Barbados.
The captain maintains the 
speed for 
, after which time the path to Barbados becomes clear of storms.
Observe the diagram :
.gif)
(a)
The total distance travelled is 
.
The total distance remaining is 
.
Substiute 
and 
.
Find the angle towards barbados :
The angle towards barbados is 
.
Therefore, the captain should turn at 
directly to barbados.
(b)
The total distance to travel to raech barbados is 
.
If the captain maintains the for the ramaining distance, then the time taken is :
(a)
The captain should turn at 
directly to barbados.
(b)
If the captain maintains the for the ramaining distance, then the time taken to reach barbados is 
.
|
"I want to tell you that our students did well on the math exam and showed a marked improvement that, in my estimation, reflected the professional development the faculty received from you. THANK YOU!!!" June Barnett |
|
"Your site is amazing! It helped me get through Algebra." Charles |
|
"My daughter uses it to supplement her Algebra 1 school work. She finds it very helpful." Dan Pease |
Simply chose a support option
  
|