May 11th, 2017, 01:05 PM  #1 
Newbie Joined: May 2017 From: India Posts: 1 Thanks: 0  Angle required
The base of a right prism is a rhombus with acute angle 'alpha', the altitude of the prism being longer than the longer diagonal of the base. At what angle to the plane of the base must we draw a secant plane to obtain a square in the section?
Last edited by skipjack; May 11th, 2017 at 04:01 PM. 
May 11th, 2017, 04:18 PM  #2 
Global Moderator Joined: Dec 2006 Posts: 21,124 Thanks: 2332 
$\sin^{1}\!\!\sqrt{\cos\alpha}$


Tags 
angle, required 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
The smallest angle in a triangle is 1 5 15 as large as the largest angle. The third  GIjoefan1976  Algebra  4  February 16th, 2016 01:55 PM 
Calculating angle sin and sin angle without any functions.  Gyiove  Algebra  1  February 26th, 2014 05:57 PM 
limit help required  Levon  Calculus  2  July 9th, 2013 02:06 PM 
help required  ymharshe  Linear Algebra  1  May 10th, 2009 05:26 PM 
Help required PLEASE !!  Useless1  Calculus  2  May 19th, 2008 12:46 PM 