+0  
 
0
34
3
avatar+129 

A submarine traveling 792 feet per minute is descending at an angle of depression of 5°. How many minutes does it take the submarine to reach a depth of 200 ft?

Mathisfornerds  May 3, 2018
Sort: 

3+0 Answers

 #1
avatar+2592 
+2

Here's a similar question: http://www.chegg.com/homework-help/submarine-traveling-90-mph-descending-angle-depression-many-chapter-5.2-problem-58e-solution-9781424089161-exc

smileysmiley

tertre  May 3, 2018
 #2
avatar+129 
0

tertre, i can't buy a book

Mathisfornerds  May 3, 2018
 #3
avatar+86528 
+1

The distance, d, that the submarine descends in one minute can be expressed as

 

sin(5°)  =  d / 792      multiply  both sides by  792

 

792*sin(5°)  =  d

 

So...to find out how many minutes it will take the sub to reach a depth of 200 ft we can evaluate this

 

200 / [ 792*sin (5°) ]  ≈ 2.9 min ≈ 2 min 54 sec 

 

 

cool cool cool

CPhill  May 4, 2018

29 Online Users

avatar
avatar
New Privacy Policy (May 2018)
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  Privacy Policy