trigonometry Flashcards
1
Q
sin θ
A
Opposite Side/Hypotenuse
2
Q
cos θ
A
Adjacent Side/Hypotenuse
3
Q
*
tan θ
A
Opposite Side/Adjacent Side
4
Q
sec θ
A
Hypotenuse/Adjacent Side
1/cos θ
5
Q
cosec θ
A
Hypotenuse/Opposite Side
1/sin θ
6
Q
cot θ
A
Adjacent Side/Opposite Side
1/tan θ
7
Q
sin(x+y)
A
sin(x)cos(y)+cos(x)sin(y)
8
Q
cos(x+y)
A
cos(x)cos(y)–sin(x)sin(y)
9
Q
sin(x–y)
A
sin(x)cos(y)–cos(x)sin(y)
10
Q
cos(x–y)
A
cos(x)cos(y) + sin(x)sin(y)
11
Q
sin2x
A
2sinxcosx
12
Q
cos2x
A
cos^2x-sin^2x
1-2sin^2x
2cos^2x-1
13
Q
Rsin(x + α)
A
Asin(x) + Bcos(x)
14
Q
Rcos(x – α)
A
Acos(x) + Bsin(x)
15
Q
pythagorian identity
A
16
Q
co function identities
A
17
Q
quotient identities
A
