arcsin, arctan, arccos? (1 Viewer)

[shimmerz_777]

i dont remember learning what these things are, theve popped up alot in explainations on some threads and id just like to know what they are for. thanks

 

[pLuvia]

The "arc" just means the "inverse" i.e
arcsinx=inverse sinx=sin^-1x, and so on

 

[shimmerz_777]

ok, so the reason y i was seeing them for the first time was cause its harder to type the inverse the other way. thanks

 

[sasquatch]

Nuh i would think that the arc notation of inverse trigonometric functions is better. Like consider this..

sin²x = (sin x)²

but does sin^-1x = (sinx)^-1

So it creates confusion i guess because the notation is contradictory. Same with this:

sin²x = (sin x)² right so say f(x) = sin x, you would think that f²(x) = sin²x, but f²(x) actually means

f²(x) = f(f(x)).

The proper way of saying f(x) squared is.. [f(x)]².. So yeah its all screwy..

 

[SoulSearcher]

As long as you make it clear what it is, then there should be no problem anyway, arcsin x, sin^-1x, whatever you want to call it, as long as people know what you are talking about.