Trig Identities & Definitions Flashcards
1
Q
Cos^2x + sin^2x
A
1
2
Q
Cos(x+y)
A
Cosxcosy - sinxsiny
3
Q
Sin(x+y)
A
Sinxcosy + sinycosx
4
Q
d/dx (sinx)
A
Cos x
5
Q
d/dx cos x
A
-sin x
6
Q
d/dx tan x
A
Sec^2 x
7
Q
d/dx sec x
A
Sec x tan x
8
Q
d/dx cot x
A
-csc^2 x
9
Q
Tan x
A
Sin x/ cos x
10
Q
Csc x
A
1/sinx
11
Q
Sec x
A
1/cosx
12
Q
Cot x
A
1/tanx or cos x/sin x
13
Q
d/dx csc x
A
-csc x cot x
