hi

Find the angles that are complimentary and supplementary to A= 34º 19' 42"

So, if angle B is complementary to A, then B = 90º - A

ok I get that part.

here is where my book loses me:

so they re-write it like this: B = 90º - 34º 19' 42"

ok, so far so good.

then they rewrite it again: 89º 59' 60" - 34º 19' 42"

Huh???????

they go onto say 90º = 89º 59' 60"

I dont get it. how did they get the 89º 59' 60" ?

Any help would be greatly appreciated. Thanks for your time.