Jak na funkci arc sinus v shellu ?

[Ladislav Dobias]

On Sat, 14 Aug 1999, Petr Simek wrote:

> Jeste dotaz - v man k bc jsem nasel pouze funkce sin/cos/tan ale jak
> udelat arc sin , arc cos , arc tan ???

arc tan tam je, ostatni se asi musi (opet :-) spocitat.
Zacnete treba tim, ze 
  tan x = sin x / cos x
Treba z toho neco vydedukujete. 

Zdravi
Lada Dobias

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