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April 22nd, 2015, 10:27 PM  #1 
Newbie Joined: Apr 2015 From: Wrexham Posts: 5 Thanks: 0  Help with circle and tangent please let 
April 23rd, 2015, 03:35 AM  #2 
Senior Member Joined: Feb 2010 Posts: 711 Thanks: 147 
$\displaystyle 3x$

April 23rd, 2015, 05:27 AM  #3 
Newbie Joined: Apr 2015 From: Wrexham Posts: 5 Thanks: 0 
I worry about myself. Thank you

April 23rd, 2015, 05:30 AM  #4 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,963 Thanks: 1148 Math Focus: Elementary mathematics and beyond 
$\displaystyle \angle{YAO}=90^\circ$ $\displaystyle \angle{CAO}=\frac{180^\circ6x}{2}$ $\displaystyle \angle{YAC}=\angle{YAO}\angle{CAO}$ 

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