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 Inverse trigonometric functions		  New Topic  Reply to Topic
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Estitxu

13 Posts
Posted - 12/04/2013 :  09:06:11 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Hello!

How can I define an inverse trigonometric function (when fitting or when plotting some function in a graph) in Origin 8?

Thanks!

Estitxu

13 Posts
Posted - 12/04/2013 :  09:09:34 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Actualy I'm interested in defining an arc cosine!

Thanks again!
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Drbobshepherd

USA
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Posted - 12/04/2013 :  09:31:53 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
I'm confused. Isn't acos already defined as a trig function in Origin8? Now I would understand your problem with atan. The user often needs to use atan2 instead of atan to execute an inverse tangent operation; in Origin8, this function is called angle. It wasn't until Origin 9.1 that atan2 was added.

DrBob
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