find the acute angle A to the nearest seond when
(a) sinA= 0.30985 (b) cotA=0.52613 (c) tan A=0.13476
please show work
Are you allowed to use calculator?. Are you expected to do these manually for some silly reason?.
If you are expected to do these by hand these days, it's silly. Why don't we just revert to slide rules. No one does that in the real world.
$\displaystyle sin^{-1}(0.30985)=$
$\displaystyle cotA\Rightarrow{A=tan^{-1}(\frac{1}{0.52613})}$
etc.