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November 12th, 2013, 05:38 AM  #1 
Senior Member Joined: Nov 2013 Posts: 137 Thanks: 1  Relationship between log and arcs
If there is a formula relating the exponential with sine and cosine normal and hyperbolic (exp (ix) = cos (x) + i sin (x), exp (x) = cosh (x) + sinh (x)), there is also a formula relating the logarithm with arcsin, arccos, and arcsinh arccosh?

November 12th, 2013, 08:09 AM  #2 
Senior Member Joined: Feb 2013 Posts: 281 Thanks: 0  Re: Relationship between log and arcs
Correct. See Logarithmic forms 
November 12th, 2013, 04:18 PM  #3 
Senior Member Joined: Nov 2013 Posts: 137 Thanks: 1  Re: Relationship between log and arcs
YEAH!!! I wrote this topic thinking these formulas! But, what is the general expression that connects both the sine and the cosine with the logarithm!? 

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arcs, log, relationship 
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