April 30th, 2015, 01:17 PM  #1 
Newbie Joined: Feb 2015 From: canada Posts: 10 Thanks: 0  solving 3D triangles
simone is facing north at the entrance of a tunnel through a mountain. She notices that a 1515 m high mountain in the distance has a bearing of 270 degrees and its peak appears at an angle of elevation of 35 degrees. After she exits the tunnel, the same mountain has the bearing of 258 degrees and its peak appears at an angle of elevation of 31 degrees. Assuming that the tunnel is perfectly level and straight, how long is it to the nearest meter? I get 1066m but the answer should be 605m Last edited by rrosa522; April 30th, 2015 at 01:30 PM. 
May 1st, 2015, 01:26 PM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,923 Thanks: 1122 Math Focus: Elementary mathematics and beyond 
How did you get 1066m?


Tags 
solving, triangles 
Search tags for this page 
simone is facing north at the entrance of a tunnel,solving 3d triangles,solving triangles in 3d,simone is facing north at the entrance of a tunnel through a mountain
Click on a term to search for related topics.

Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
solving triangles  rrosa522  Trigonometry  2  April 27th, 2015 05:53 PM 
how many triangles?  Evgenia  Geometry  5  September 9th, 2014 03:23 PM 
Triangles  Dacu  Algebra  0  May 25th, 2013 11:28 PM 
Triangles  Archonn  Algebra  20  November 5th, 2012 12:35 PM 
How many triangles?  MATHS  Algebra  2  November 6th, 2007 06:59 AM 