Maths - Formulae Flashcards
0
Q
Binomial Range
A
-1 < x < 1
1
Q
Binomial Expansion
A
1+ nx+ n(n-1)x^2 + n(n-1)(n-2)x^3
———- —————-
2! 3!
2
Q
Sin^2x + Cos^2x
A
1
3
Q
Tanx
A
Cosx
4
Q
Sec^2x
A
1 + tan^2x
5
Q
Cosec^2x
A
1 + cot^2x
6
Q
Cotx
A
Sinx
7
Q
Sin(a+-b)
A
SinaCosb +- CosaSinb
8
Q
Cos(a+-b)
A
CosaCosb -+ SinaSinb
9
Q
Tan(a+-b)
A
1 -+ TanaTanb
10
Q
Secx
A
Cosx
11
Q
Cosecx
A
Sinx
12
Q
Cotx
A
Cosx 1
—— = ——
Sinx Tanx
13
Q
Sin2x
A
2(SinxCosx)
14
Q
Cos2x
A
Cos^2x - Sin^2x
2Cos^2x - 1
1 - 2Sin^2x
