to display sinx in radians

[TarunAgarwal]

How to write a Labview code to display sinx where x is in radians using first principle

[sparkysquared]

Uh, use the sine function?

http://zone.ni.com/reference/en-XX/help/371361J-01/glang/sine/

--Ryan

[smercurio_fc]

Homework questions are getting so terse these days.

[crossrulz]

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@smercurio_fc wrote:

Homework questions are getting so terse these days.

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Do they not know all they have to do is open the Help and search for their function?  And then read.  It would be a lot less effort than signing up on NI's forum and then posting a question.

[altenbach]

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@TarunAgarwal wrote:

... using first principle

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Of course that could mean "without using any trigonometric functions", for example, which is a more interesting problem. 😄

You could implement a Taylor Series, for example. 😄

[TarunAgarwal]

I also think so that we have to expand it using taylor series .How to start in that case..

[TarunAgarwal]

This one i already know my dear..

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@sparkysquared wrote:

Uh, use the sine function?

http://zone.ni.com/reference/en-XX/help/371361J-01/glang/sine/

--Ryan

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[altenbach]

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@TarunAgarwal wrote:

I also think so that we have to expand it using taylor series .How to start in that case..

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You start with the wikipedia entry.

Then you wrap the given angle into the -pi..+pi interval and apply the taylor series:

Where do you have problems?

[altenbach]

Just to wrap this all up, here's a quick attempt of a Taylor series implementation of sine(x). With 14 terms, it is within ~1e-15 of the stock trigonometric function shipping with LabVIEW over a very wide range.

I am sure improvements are possible.... 😄

 

Attached VI is in LV 8.2)

[TarunAgarwal]

Can somebody help me in designing  the same using mathscript node or formula node .

In formula node there is no function for factorial representation but in mathscript node there is one...

can anybody write the vi for same...