Trig Identities
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csc2x
1 + cot2x=
sec2x
1 + tan2x=
sin2x
1-cos2x=
cos2x
1-sin2x=
cosx (always positive)
Cos(-x) is equal to...
1/secx
Cosx is equal to...
cosx/sinx
Cotx is equal to...
cot2x
Csc2x - 1=
1/sin2x
Csc2x is equal to...
1/sinx
Cscx is equal to...
tan2x
Sec2x - 1=
1/cosx
Secx is equal to...
-sinx (always opposite)
Sin(-x) is equal to...
1/cscx
Sinx is equal to...
-tanx (always opposite)
Tan(-x) is equal to...
sin2x/cos2x
Tan2x is equal to...
sinx/cosx
Tanx is equal to...
x
What is cos?
x/y
What is cot?
1/y
What is csc?
1/x
What is sec?
y
What is sin?
y/x
What is tan?
csc2x
_______ - cot2x = 1
1-sinx
cos2x/1 + sinx
tan2x
sec2x - _______=1
1
sin2x + cos2x=
1-cosx
sin2x/ 1 + cosx
