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(0 is not the number zero I don't know what its called)
I have to find r first.
r=sqrt x^2+y^2
r=sqrt -5^2+-4^2
r=sqrt 41
sin=y/r
sin=-4/sqrt 41
cos=x/r
cos=-5/sqrt 41
tan=y/x
tan=-4/-5
csc=r/y
csc=sqrt 41/-4
sec=r/x
sec=sqrt 41/-5
cot=x/y
cot=-5/-4