Question

if sec t=-5 compute sin(-t)+cos(-t) help!!

Answer 1

sin(-t)=-sin(t)
cos(-t)=cos(t)

sin(-t)+cos(-t)=Cos (t) - Sin(t)

Answer 2

i wrote the problem wrong its if sec x=-5 not t=-5..does this change ur response?

Answer 3

see...
sint=\[\sqrt{1-\cos^2t}\]\[=\sqrt{1-(1/\sec^2t)}\]

and
sin(-t)=-sint=\[\sqrt{1-(1/25)}\]=\[\sqrt{24}/5\]
lly
cos(-t)=cost=(-1/5)
so..
sin(-t)+cos(-t)=\[\sqrt{24}/5+(-1/5)\]=\[(\sqrt{24}-1)5\]
hope its correct

Answer 4

if you change t to x in sect...then in that case you need to also change t x in cos and sin....in that case it makes no difference..