In this video I go over the proof for the inverse trigonometry identity which is listed below in the many ways of writing inverse trigonometry:
inverse sec(x) = inverse cos(1/x)
arcsec(x) = arccos(1/x)
asec(x) = acos(1/x)
sec-1x = cos-1(1/x)
I also go over how to graph inverse trigonometry functions directly into Google search so make sure to watch this video!
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Inverse Trigonometry Identity: sec-1x = cos-1(1/x)
Note: sec-1x is usually written as arcsec(x) or asec(x) and it is best to use forms to graph in Google search, etc.