Trig Identities Flashcards
0
Q
cos x = (1/sec x)
A
Reciprocal identity
1
Q
Sin x = (1/csc x)
A
Reciprocal identity
2
Q
tan x = (1/cot x)
A
Reciprocal identity
3
Q
Csc x = (1/ sin x)
A
Reciprocal identity
4
Q
Sec x = (1/ cos x)
A
Reciprocal identity
5
Q
Cot x = (1/ tan x)
A
Reciprocal identity
6
Q
Tan x = (sin x/ cos x)
A
Quotient identity
7
Q
Cot x = (cos x/sin x)
A
Quotient identity
8
Q
Sin (-x) = -sin (x)
A
Even/odd identity
9
Q
Cos (-x) = cos (x)
A
Even/odd identity
10
Q
Tan (-x) = -tan (x)
A
Even/odd identity
11
Q
Csc (-x) = -csc (x)
A
Even/odd identity
12
Q
Sec (-x) = sec (x)
A
Even/odd identity
13
Q
Cot (-x) = -cot (x)
A
Even/odd identity
14
Q
Sin^2 x + cos^2 x = 1
A
Pythagorean identity
