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28 Cards in this Set

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cscθ =
1/sinθ
tanθ =
sinθ/cosθ
cotθ =
1/tanθ OR cosθ/sinθ
secθ =
1/cosθ
sin^2θ + cos^2θ =
1
1 + tan^2θ =
sec^2θ
1 + cot^2θ =
csc^2θ
sin(-θ) =
-sinθ
cos(-θ) =
cosθ
tan(-θ) =
-tanθ
sin(π/2 - θ)
cosθ
cos(π/2 - θ)
sinθ
tan(π/2 - θ)
cotθ
sin A/a = sin B/b =
sin C/c
a^2 = b^2 + ...
c^2 - 2bc cosA
b^2 = a^2 + c^2 ...
- 2ac cosB
c^2 = a^2 + b^2 ...
- 2ab cosC
sin(x+y) =
sinxcosy + cosxsiny
sin(x-y) =
sinxcosy - cosxsiny
cos(x+y) =
cosxcosy - sinxsiny
cos(x-y) =
cosxcosy + sinxsiny
tan(x+y) =
tanx + tany/1 - tanxtany
tan(x-y) =
tanx - tany/1 + tanxtany
sin2x =
(Double Angle Formula)
2sinxcosx
(Double Angle Formula)
cos2x =
cos^2x - sin^2x

OR

2cos^2x - 1

OR

1 - 2sin^2x
tan2x =
2tanx/1 - tan^2x
sin^2x =
1 - cos2x/2
cos^2x =
1 + cos2x/2