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Fundemntal trig identities
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sinθ
1/cscθ
cscθ
1/sinθ
cosθ
1/cosθ
tanθ
1/cotθ
cotθ
1/tanθ
tanθ
sinθ/cosθ
cotθ
cosθ/sinθ
sin² θ+ cos² θ
=1
1 + tan² θ
=sec² θ
1 + cot² θ
csc² θ
sin(-θ)
-sin θ
cos(-θ)
cos θ
tan (-θ)
-tan (θ)
sin θ
tanθ/secθ
cos θ
1/sec θ
tanθ
1/cotθ