7 Flashcards
1
Q
Sec(x) =
A
1/Cos(x)
2
Q
Csc(x) =
A
1/Sin(x)
3
Q
Tan(x) =
A
Sin(x)/Cos(x)
4
Q
Cot(x) =
A
1/Tan(x)
5
Q
Sin^2(x) + Cos^2(x) =
A
1
6
Q
1 + tan^2(x) =
A
sec^2(x)
7
Q
1 + cot^2(x) =
A
csc^2(x)
7
Q
sin(-x) =
A
-sin(x)
8
Q
cos(-x) =
A
cos(x)
9
Q
tan(-x) =
A
-tan(x)
10
Q
sin(x+y) =
A
sin(x)cos(y) + cos(x)sin(y)
11
Q
sin(x-y) =
A
sin(x)cos(y) - cos(x)sin(y)
12
Q
cos(x+y) =
A
cos(x)cos(y) - sin(x)sin(y)
13
Q
cos(x-y) =
A
cos(x)cos(y) + sin(x)sin(y)
14
Q
sin(2x) =
A
2cos(x)sin(x)
15
Q
cos(2x) =
A
cos^2(x) - sin^2(x) = 2cos^2(x) - 1 = 1 - 2sin^2(x)
16
Q
sin^2 =
A
(1 - cos(2x))/2
17
Q
cos^2(x) =
A
(1 + cos(2x))/2
18
Q
sin(u/2) =
A
+- sqrt((1 - cos(u))/2)
19
Q
cos(u/2) =
A
+- sqrt((1 + cos(u))/2)
20
Q
sin(u)cos(v) =
A
1/2[sin(u + v) + sin(u - v)]
21
Q
cos(u)sin(v) =
A
1/2[sin(u + v) - sin(u - v)]
22
Q
cos(u)cos(v) =
A
1/2[cos(u + v) + cos(u - v)]
23
Q
sin(u)sin(v) =
A
1/2[cos(u - v) - cos(u + v)]
