Trigonometry
4.5(4)
Studied by 125 people
Learn
Practice Test
Spaced Repetition
Match
FlashcardsCard Sorting
1/66
Earn XP
Description and Tags
Study Analytics
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
67 Terms
1
New cards
sin 30°
1/2
2
New cards
sin 45°
1/√2
3
New cards
sin 60°
√3/ 2
4
New cards
cos 30°
√3/ 2
5
New cards
cos 45°
1/√2
6
New cards
cos 60°
1/2
7
New cards
tan 30°
1/√3
8
New cards
tan 45°
1
9
New cards
tan 60°
√3
10
New cards
pythagorean identities (list all)
11
New cards
𝝅
180°
12
New cards
𝝅/2
90°
13
New cards
𝝅/3
60°
14
New cards
𝝅/4
45°
15
New cards
𝝅/6
30°
16
New cards
sin 90°
1
17
New cards
cos 90°
0
18
New cards
tan 90°
undefined
19
New cards
sin 𝝅/2
1
20
New cards
sin 𝝅/6
1/2
21
New cards
sin 𝝅/4
√2/ 2
22
New cards
sin 𝝅/3
√3/ 2
23
New cards
cos 𝝅/2
0
24
New cards
cos 𝝅/6
√3/ 2
25
New cards
cos 𝝅/4
√2/ 2
26
New cards
cos 𝝅/3
1/2
27
New cards
tan 𝝅/2
undefined
28
New cards
tan 𝝅/6
1/√3
29
New cards
tan 𝝅/4
1
30
New cards
tan 𝝅/3
√3
31
New cards
csc 𝜃
1 / sin 𝜃
32
New cards
sec 𝜃
1 / cos 𝜃
33
New cards
cot 𝜃
1 / tan 𝜃
34
New cards
sin 𝜃
opp / hyp
35
New cards
cos 𝜃
adj / hyp
36
New cards
tan 𝜃
opp / adj
37
New cards
Law of Sines
38
New cards
Law of Cosines
39
New cards
y = sin x (graph)
40
New cards
y = cos x (graph)
41
New cards
y = tan x (graph)
42
New cards
y = csc x (graph)
43
New cards
y = sec x (graph)
44
New cards
y = cot x (graph)
45
New cards
sin² 𝜃 + cos² 𝜃 =
1
46
New cards
sec² 𝜃 - tan² 𝜃 =
1
47
New cards
csc² 𝜃 - cot² 𝜃 =
1
48
New cards
sin (90 - 𝜃) =
cos 𝜃
49
New cards
cos (90 - 𝜃) =
sin 𝜃
50
New cards
tan (90 - 𝜃) =
cot 𝜃
51
New cards
sin (x + y) =
sin x cos y + cos x sin y
52
New cards
sin (x - y) =
sin x cos y - cos x sin y
53
New cards
cos (x + y) =
cos x cos y - sin x sin y
54
New cards
cos (x - y) =
cos x cos y + sin x sin y
55
New cards
tan (x + y) =
(tan x + tan y)/(1 - tan x tan y)
56
New cards
tan (x - y) =
(tan x - tan y)/(1 + tan x tan y)
57
New cards
sin (2x) =
2 sin x cos x
58
New cards
cos (2x) =
= cos² x - sin² x
= 2 cos² x - 1
= 1 - 2 sin² x
= 2 cos² x - 1
= 1 - 2 sin² x
59
New cards
tan (2x) =
(2 tan x)/(1 - tan² x)
60
New cards
sin² x =
(1 - cos(2x) )/2
61
New cards
cos² x =
(1 + cos(2x) )/2
62
New cards
sin 0°
0
63
New cards
cos 0°
1
64
New cards
tan 0°
0
65
New cards
triangle area formula
1/2 ABsin(c)
66
New cards
cos rule for side
c^2 = a^ + b^2 - 2ab cos(c)
67
New cards
cos rule for angle
cos C = (a^2 +b^2 - c^2)/2ab
Note 
Flashcards (32)