Misc Flashcards
1
Q
Law of sines
A
a/Sin A = b/Sin B = c/Sin C
2
Q
Law of Cosines
A
a^2 = b^2 + c^2 - 2bc Cos A
3
Q
Sin (θ +/- ω) = ?
A
Sin θ Cos ω +/- Cos θ Sin ω
4
Q
Cos (θ +/- ω) = ?
A
Cos θ Cos ω -/+ Sin θ Sin ω
5
Q
Tan (θ +/- ω) = ?
A
(Tan θ +/- Tan ω)/(1 -/+ (Tan θ Tan ω))
6
Q
Sin 2θ = ?
A
2 Sin θ Cos θ
7
Q
Cos 2θ = ?
A
Cos^2 θ - Sin^2 θ = 1 - 2 Sin^2 θ = 2 Cos^2 θ -1
8
Q
Tan 2θ = ?
A
(2 Tan θ)/(1 - Tan^2 θ)
