PreCalc Flashcards
1
Q
tan x =
A
sinx/cosx
2
Q
cot x =
A
cosx/sinx
3
Q
secx =
A
1/cosx
4
Q
cscx =
A
1/sinx
5
Q
sin^2x + cos^2x =
A
1
6
Q
sec^2 - tan^2x
A
1
7
Q
2sinxcosx =
A
sin2x
8
Q
cos^2x - sin^2x =
A
cos2x
9
Q
sin(-x) =
A
-sinx
10
Q
cos(-x) =
A
cosx
11
Q
tan(-x) =
A
-tanx
12
Q
sin(A+B)
A
sinAcosB+sinBcosA
13
Q
sin(A-B)
A
sinAcosB-sinBcosA
14
Q
cos(A+B)
A
cosAcosB-sinAsinB
15
Q
cos(A-B)
A
cosAcosB+sinAsinB
