Identities Flashcards
1
Q
cos2x=
A
1-sin2x
2
Q
1+tan2x=
A
sec2x
3
Q
cot2x+1=
A
csc2x
4
Q
sin2x= ———————–
A
1-cos(2x)
2
5
Q
cos2x= ——————–
A
1+cos(2x)
2
6
Q
tan(x) = ——————
A
sin(x)
cos(x)
7
Q
cot(x) = ———————
A
cos(x)
sin(x)
8
Q
sin(2x)=
A
2sin(x)cos(x)
9
Q
sin2x=
A
1-cos2x
10
Q
sec2x=
A
1+tan2x
11
Q
tan2x=
A
sec2x-1
12
Q
cot2x=
A
csc2x-1
13
Q
csc2x=
A
cot2x+1
14
Q
ln(1)=
A
0
15
Q
ln(0)=
A
-INFINITY
