Trig identities
0.0(0)
Studied by 0 people
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt PlayCard Sorting
1/19
There's no tags or description
Looks like no tags are added yet.
Last updated 1:12 PM on 1/15/26
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
20 Terms
1
New cards
sin(α ± β) =
= sinα*cosβ
2
New cards
cos(α ± β) =
= cosα*cosβ
3
New cards
tan(α ± β) =
= tanα ± tanβ/1 ∓ tanα*tanβ
4
New cards
csc(α ± β) =
= secα secβ cscα cscβ/secα cscβ ± cscα secβ
5
New cards
sec(α ± β) =
= secα secβ cscα cscβ/cscα cscβ ∓ secα secβ
6
New cards
cot(α ± β) =
= cotα cotβ ∓ 1/cotβ ∓ cotα
7
New cards
sin(2θ) =
= 2sinθcosθ
8
New cards
cos(2θ) =
= cos(θ)2 - sin(θ)2
9
New cards
csc(x) =
1/sin(x) =
10
New cards
sec(x) =
1/cos(x) =
11
New cards
cot(x) =
1/tan(x)
12
New cards
sec2(x) =
1 + tan2(x) =
13
New cards
csc2(x) =
1 + cot2(x) =
14
New cards
sin(x/2) =
±√(1 - cos(x)/2)
15
New cards
cos(x/2) =
±√(1+cos(x)/2)
16
New cards
tan(x/2) =
1 - cos(x)/sin(x) =
17
New cards
sin(a+b) =
sin(a)cos(b) + cos(a)sin(b) =
18
New cards
sin(a-b) =
sin(a)cos(b) - cos(a)sin(b) =
19
New cards
cos(a+b) =
cos(a)cos(b) - sin(a)sin(b) =
20
New cards
cos(a-b) =
cos(a)cos(b) + sin(a)sin(b) =
Note 
Flashcards (61)