Unit 1 Identity Formulas Flashcards
1
Q
Reciprocal Identities
A
sin ø = 1/csc ø —- csc ø = 1/sinø
cos ø = 1/sec ø —— sec ø = 1/cos ø
tan ø = 1/cot ø —— cot ø = 1/tan ø
2
Q
Complementary Angle Identities
A
sin ø = cos(90-ø)
cos ø = sin(90-ø)
tan ø = cot(90-ø)
csc ø = sec(90-ø)
sec ø = csc(90-ø)
cot ø = tan(90-ø)
3
Q
quotient identities
A
tan ø = sinø/cosø
cot ø = cosø/sinø
4
Q
Pythagorean Identities
A
sin^2ø + cos^2ø = 1
1+tan^2ø = sec^2ø
1+cot^2ø = csc^2 ø
5
Q
Recip ID
sinø = 1/cscø
A
cscø = 1/sinø
6
Q
Recip ID
cosø = 1/secø
A
secø = 1/cosø
7
Q
Recip ID
tanø = i/cotø
A
cotø = 1/tanø
8
Q
Comp ID
sinø
A
cos(90-ø)
9
Q
Comp ID
cos ø
A
sin(90-ø)
10
Q
Comp Id
tan ø
A
cot(90-ø)
11
Q
Comp ID
csc ø
A
sec(90-ø)
12
Q
Comp ID
sec ø
A
csc(90-ø)
13
Q
Comp ID
cot ø
A
tan(90-ø)
14
Q
Quotient ID
tan ø
A
sinø/cosø
15
Q
Quotient ID
cot ø
A
cosø/sinø
16
Q
Pythag ID
sin^2ø + cos^2ø = ?
A
1
17
Q
Pythag ID
1 + tan^2ø =
A
sec^2ø
18
Q
Pythag ID
1 + cot^2ø =
A
csc^2ø
