# Trigonometry Outcomes

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• Created by: Elliott
• Created on: 28-04-14 00:37
tanθ =
sinθ/cosθ
1 of 23
sin^2 θ + cos^2 θ =
1
2 of 23
cosecθ =
1/sinθ
3 of 23
secθ =
1/cosθ
4 of 23
cotθ =
1/tanθ
5 of 23
1/tanθ =
cosθ/sinθ ∴ cotθ = 1/tanθ = cosθ/sinθ
6 of 23
1 + tan^2 θ =
sec^2 θ
7 of 23
1 + cot^2 θ
cosec^2 θ
8 of 23
Sin(A+B) =
SinACosB + CosASinB
9 of 23
Sin(A-B) =
SinACosB - CosASinB
10 of 23
Cos(A+B) =
CosACosB - SinASinB
11 of 23
Cos(A-B) =
CosACosB + SinASinB
12 of 23
Tan(A+B) =
(TanA + TanB)/(1 - TanATanB)
13 of 23
Tan(A-B) =
(TanA - TanB)/(1 + TanATanB)
14 of 23
Sin2A ≡
2SinACosA
15 of 23
Cos2A ≡
Cos^2 A - Sin^2 A
16 of 23
Cos2A ≡
2Cos^2 A - 1
17 of 23
Cos2A ≡
1 - 2Sin^2 A
18 of 23
Tan2A ≡
(2TanA)/(1 - Tan^2 A)
19 of 23
SinP + SinQ ≡
2Sin((P+Q)/2)Cos((P-Q)/2)
20 of 23
SinP - SinQ ≡
2Cos((P+Q)/2)Sin((P-Q)/2)
21 of 23
CosP + CosQ ≡
2Cos((P+Q)/2)Cos((P-Q)/2)
22 of 23
CosP - CosQ ≡
-2Sin((P+Q)/2)Sin((P-Q)/2)
23 of 23

## Other cards in this set

### Card 2

#### Front

sin^2 θ + cos^2 θ =

1

cosecθ =

secθ =

cotθ =