Nope. This is rotating about the pivot point. The ratios change.
For example, the ratio when horizontal is nearly 8:1. When it's vertical,
it's 1:1.
You can "rough guess" it, but since he's interested in precision, one should
do the math correctly and precisely.
 Original Message 
From: "Chris Kantarjiev" <cak@dimebank.com>
To: <shoptalk@autox.team.net>
Sent: Thursday, April 09, 2009 2:44 PM
Subject: Re: [Shoptalk] math wizards ??? come here
>> You need a few more pieces of information in order to do the trig.
>
> Not really ... as Randall pointed out, 'similar triangles' gets
> it done with what he's got, since all the ratios remain the same.
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