## anonymous 5 years ago arcsec(sec pi) - without using tables or calculators

1. amistre64

$\sec^{-1}(\sec(\pi))$

2. amistre64

cos cot sec are up top..... so it shuold be pi

3. amistre64

the domains of cos, cot, and sec are from 0 to pi...the top part of the unit circle; so we just get pi back as the result of your problem

4. anonymous

okay, thanks. Is it possible for you to show the steps? I'm being graded for working too..

5. amistre64

the steps; hmm..... sec^-1(sec(pi)) sec^-1(-1) = pi I really dont know what "steps" the grader is looking for.

6. anonymous

You me both, lol. Thanks! :)