Trigonometry Flashcards
1
Q
sin 30
A
0.5
2
Q
cos 30
A
0.866
3
Q
tan 30
A
0.577
4
Q
sin 60
A
0.866
5
Q
cos 60
A
0.5
6
Q
tan 60
A
1.732
7
Q
sin 45
A
0.707
8
Q
cos 45
A
0.707
9
Q
tan 45
A
1
10
Q
sin rule
A
sin A/a = sin B/b = sin C/c
11
Q
cosine rule (side)
A
c^2 = a^2 + b^2 - 2 * a * b * cos C
12
Q
cosine rule (angle)
A
cos C = (a^2 + b^2 - c^2)/2 * a * b
13
Q
Area of a triangle
A
1/2 * a * b * sin C
14
Q
Quadrant 1 (All)
A
y = sin Θ
x = cos Θ
y/x = tan Θ
15
Q
Quadrant 2 (Stations)
A
sin (180 - Θ) = sin Θ
cos (180 - Θ) = - cos Θ
tan (180 - Θ) = - tan Θ
16
Q
Quadrant 3 (To)
A
sin (180 + Θ) = - sin Θ
cos (180 + Θ) = - cos Θ
tan (180 + Θ) = tan Θ
17
Q
Quadrant 4 (Central)
A
sin (360 - Θ) = - sin Θ
cos (360 - Θ) = cos Θ
tan (360 - Θ) = - tan Θ
18
Q
sin (0, 360)
A
0
19
Q
sin (90)
A
1
20
Q
sin (180)
A
0
21
Q
sin (270)
A
-1
22
Q
cos (0, 360)
A
1
23
Q
tan (0, 360)
A
0
24
Q
cos (90)
A
0
25
tan (90)
Undefined
26
cos (180)
-1
27
tan (180)
0
28
cos (270)
0
29
tan (270)
Undefined
