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12 Threads found on edaboard.com: **Arcsin**

C=(x0-xf)/sin(xf+theta)
and
theta=**arcsin**{(x0-xf)/C}-xf
So you assign two initial value for these variables then find them by inserting the value that you have already found in the equation before.
It should normally work if it converges.

Mathematics and Physics :: 11-04-2016 19:07 :: BigBoss :: Replies: **1** :: Views: **2054**

So **arcsin** (xV/12V) is all i have...
It is not too clear what exactly do you need, but assuming that you´re searching for some low overhead computational method that calculate the trigonometric function above, probably something like this could fulfill:

Mathematics and Physics :: 03-27-2015 02:30 :: andre_teprom :: Replies: **3** :: Views: **1162**

... if I can use a value with more accuracy whitout put in by hand like: 3,141592653589793
Sometimes I use an inverse trigonometric function like π = 2***arcsin** 1 = 2*arccos 0 = 4*arctan 1
(in the Wiki, scroll down to Special values in trigon

Analog Circuit Design :: 02-03-2015 19:07 :: erikl :: Replies: **2** :: Views: **570**

1) Do the math. If you have a maximum allowable error of 2%, that means you have to sample fast enough so that you will always get a sample within 2% of the peak. For a (presumably) 50Hz sine wave:
**arcsin**(.98)= 78.5 degrees
360/78.5=4.6
Thus, you will need to sample at least 5 times per cycle, or every 4 milliseconds.
2) Relay? what relay? Op

Microcontrollers :: 10-01-2014 23:53 :: barry :: Replies: **4** :: Views: **909**

Formally, if x = sin(t), then t = **arcsin**(x). If you look at the graph, you notice that the function be only inversed with restrictions. But the function exists, you can e.g. use your pocket calculator to get the result.

Mathematics and Physics :: 02-08-2014 17:52 :: FvM :: Replies: **10** :: Views: **914**

We know known the PLL output is Sin(Φout) where Φout=ωout*t+Θ(t),for stability and calculation of the PLL loop I have to find transfer function of Φout(s)/ Φin(s). The Problem is how can I Take Φout from Sin( Φout) in Matlab simulink?
Iam looking for something like **arcsin**() function but as **arcsin** lies

Analog Circuit Design :: 12-08-2013 18:07 :: Ata-Va :: Replies: **0** :: Views: **626**

If high accuracy is an objective, you should code your own library function using power series, see List of mathematical series - Wikipedia, the free encyclopedia
Here's the example for inverted sine

Microcontrollers :: 08-18-2011 07:22 :: FvM :: Replies: **2** :: Views: **596**

Hi, does anyone have any advice or experience with computing the **arcsin** of an angle using VHDL or the cordic core?

PLD, SPLD, GAL, CPLD, FPGA Design :: 08-12-2010 20:41 :: sweethomela8 :: Replies: **0** :: Views: **1654**

sin^-1 means **arcsin** not 1/sin

RF, Microwave, Antennas and Optics :: 12-01-2009 14:54 :: Chinaski :: Replies: **9** :: Views: **1392**

I have reviwed some topics in the form and I see that in order to implement SIN/COS/**arcsin**..... there are two ways:
1. LUT/ROM
2. CORDIC algorithm.
so what is CORDIC and how it does work?
Is it an advanced LUT or what?
whats is the advantages/dis of it?
why it is prefered?

PLD, SPLD, GAL, CPLD, FPGA Design :: 01-25-2007 23:53 :: khaila :: Replies: **2** :: Views: **1260**

hi,
Can any one answer my following questions:
1- How can I find FPGA implementation of **arcsin**() and do you know any references?
2- In MATLAB, how MathWork implement the **arcsin**() function do you know its algorithm?
regards

PLD, SPLD, GAL, CPLD, FPGA Design :: 12-30-2006 04:24 :: ahmadagha23 :: Replies: **9** :: Views: **5772**

It is actually the **arcsin** of the ratio of the vertical and horizontal displacements. The derivation is straightforward. The Lissajous curve is ploting the first waveform (x=V1sin wt) versus the second waveform (y=V2sin wt + phi). So the steps would be to get an expression for the curve, and then the two zero crossings would be the displacement.

Elementary Electronic Questions :: 03-22-2006 05:21 :: icdesignusa :: Replies: **1** :: Views: **4892**

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