Quantcast Geometry question? - XP Math - Forums
XP Math Home Sign Up FREE! | Sign In | Classroom Setup | Common Core Alignment PDF Version

Go Back   XP Math - Forums > Welcome > Off-Topic Discussion

 
 
Thread Tools Display Modes
Old 07-27-2007   #1
Lex
Guest
 
Posts: n/a
Default Geometry question?

The angle of elevation to the top of building from a postion on the ground 100 meters from the base of the builfing is 40 degrees. how tall is the building?a. 321 mb. 227 mmc. 119 md. 84 m
 
Old 07-27-2007   #2
VermilionPhoenix
Guest
 
Posts: n/a
Default

all of the above.Use your textbook...Yeesh...
 
Old 07-27-2007   #3
ryanker1
Guest
 
Posts: n/a
Default

You don't even need a calculator for this one.40 degrees is less than 45 degrees, and 45 degrees is the angle of elevation where the height would be _equal to_ the distance from the base. The choice that's less than 100 is d.More generally, the formula for the height of the building would be...h = d * tan ewhere...h is the height.d is the distance you are from the base of the building.e is the angle of elevation to the top of the building.
 
 

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:58 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XP Math