Correct layout of e^/LN/10^/LOG?

[Johnh]

I can't see any point I having dedicated functions for sec cosec and cotan. It's better to just use the 1/x key after cos, sin or tan. This helps to keep in mind the basic relationships between the sides of a right triangle and I think we dont need the extra names.

In civil and structural engineering im not aware of any common use for hyperbolic functions either, though catenary geometry was mentioned above. So I've learnt that here!