Trigonometric Properties (I)

Reciprocal Properties:
cotx= 1 cscx = 1 secx=1
--- ---- ---
tanx sinx cosx

tanx cotx=1
sinx cscx=1
cosx secx=1








Odd and Even Function Properties:
sin(-x) = -sin x
cos(-x) = cos x
tan(-x) = -tan x
cot(-x) = -cot x
sec(-x) = sec x
csc(-x) = -csc x