Identities Flashcards
1
Q
even functions
A
cosine
secant
2
Q
odd functions
A
sine
tangent
cosecant
cotangent
3
Q
pythagorean identity relating sin and cos
A
1 = sin^2𝜃 + cos^2𝜃
4
Q
pythagorean identity relating sec and tan
A
1 = sec^2𝜃 - tan^2𝜃
5
Q
pythagorean identity relating csc and cot
A
1 = csc^2𝜃 - cot^2𝜃
6
Q
sin circle identity
A
sin𝜃 = y/r
7
Q
sin reciprocal identity
A
sin𝜃 = 1/csc𝜃
8
Q
sin quotient identity
A
sin𝜃 = tan𝜃cos𝜃
9
Q
sin cofunction identity
A
sin𝜃 = cos(π/2 - 𝜃)
10
Q
cos circle identity
A
cos𝜃 = x/r
11
Q
cos reciprocal identity
A
cos𝜃 = 1/sec𝜃
12
Q
cos quotient identity
A
cos𝜃 = sin𝜃/tan𝜃
13
Q
cos cofunction identity
A
cos𝜃 = sin(π/2 - 𝜃)
14
Q
sec circle identity
A
sec𝜃 = r/x
15
Q
sec reciprocal identity
A
sec𝜃 = 1/cos𝜃
