To get around aspect ratios you really only need one formula: W² + H² = D², and the resultant ratios allowing you to cross-multiply and divide. There is a bit of a catch though you could run into; AVIXA wants things done THEIR way, and another way will not necessarily do, even if it may be more accurate. They want you to use the TI-30XS calculator, and work with PEMDAS order of operations. This works fine - you can pick up this calculator cheaply for practice, and I would recommend you do so, as well as getting used to the on-line emulation of it, which will be the only calculator you’re allowed to use on the test. But the CTS certification hasn’t really been around all that long, and as a result quite a few of us are taking it with already a decade or two of AV experience under our belts, and in my case I’ve been using an HP Reverse Polish calculator for years, allowing me to work through problems with parenthesis and store intermediate results for greater accuracy. Turns out that greater accuracy can hurt you. In explaining the formulas, AVIXA explains, for 16/9 ratio, 16² + 9² = 337, and √337 = 18.35755975. But not having any efficient way to store or use this result on the algebraic calculator, they say you should just round this number to 18.36. Well, I admit that would be more than good enough for most real world situations, but when they later ask you on the simulated test to solve for the width of a 16/9 screen with a 72” diagonal, and to round your result to the nearest tenth, it emerges that there is a difference between the true 18.35755975 and the more approximate 18.36. The “real” number gives 62.7534” which rounds to 62.8, while the “approximated” 18.36 gives 62.745, which rounds to 62.7”. I used the real number, and got the real result, and was marked wrong on the practice test. Now they don’t say what the result was they wanted, but I can only surmise they wanted me to give the approximate result - because that’s the way they do it - rather than the more accurate result that my own calculation returns. So go through the online training - get the book, get the calculator and do it their way!
@@stephbeckett55 wish you the best next time, i have a question; English is my second language is there any word manipulation, or questions are direct? should i be worried?
![rAVe [PUBS]](http://yt3.ggpht.com/ytc/AIdro_ncLnvzT4O7Ugyzm3AznmXNexjTjGX6Ci8oCjen_TTyPjk=s48-c-k-c0x00ffffff-no-rj)
Is there Tudors that can help with test I failed twice and really wanna pass
When did that new exam guide come out
where is the link for how much is the exam the price$
$490
any info about Aspect Ratio?
To get around aspect ratios you really only need one formula: W² + H² = D², and the resultant ratios allowing you to cross-multiply and divide. There is a bit of a catch though you could run into; AVIXA wants things done THEIR way, and another way will not necessarily do, even if it may be more accurate. They want you to use the TI-30XS calculator, and work with PEMDAS order of operations. This works fine - you can pick up this calculator cheaply for practice, and I would recommend you do so, as well as getting used to the on-line emulation of it, which will be the only calculator you’re allowed to use on the test.
But the CTS certification hasn’t really been around all that long, and as a result quite a few of us are taking it with already a decade or two of AV experience under our belts, and in my case I’ve been using an HP Reverse Polish calculator for years, allowing me to work through problems with parenthesis and store intermediate results for greater accuracy. Turns out that greater accuracy can hurt you.
In explaining the formulas, AVIXA explains, for 16/9 ratio, 16² + 9² = 337, and √337 = 18.35755975. But not having any efficient way to store or use this result on the algebraic calculator, they say you should just round this number to 18.36. Well, I admit that would be more than good enough for most real world situations, but when they later ask you on the simulated test to solve for the width of a 16/9 screen with a 72” diagonal, and to round your result to the nearest tenth, it emerges that there is a difference between the true 18.35755975 and the more approximate 18.36. The “real” number gives 62.7534” which rounds to 62.8, while the “approximated” 18.36 gives 62.745, which rounds to 62.7”. I used the real number, and got the real result, and was marked wrong on the practice test. Now they don’t say what the result was they wanted, but I can only surmise they wanted me to give the approximate result - because that’s the way they do it - rather than the more accurate result that my own calculation returns.
So go through the online training - get the book, get the calculator and do it their way!
I have been trying to reach out but you don't accept messages on twitter or linkedin. Did you pass?
I did not. I made a 329 and you need a 350 - Study With Steph has been renewed for season 2! Lol
@@stephbeckett55 wish you the best next time, i have a question; English is my second language is there any word manipulation, or questions are direct? should i be worried?
✌️
White Sarah Moore Cynthia Allen Laura