unit circle (basic trig) Flashcards
(40 cards)
1
Q
what coordinate corresponds to π/3?
A
(1/2, √3/2)
2
Q
what coordinate corresponds to π/4?
A
(√2/2, √2/2)
3
Q
what coordinate corresponds to π/6?
A
(√3/2, 1/2)
4
Q
what coordinate corresponds to 2π?
A
(1,0)
5
Q
what coordinate corresponds to π/2?
A
(0,1)
6
Q
what coordinate corresponds to π?
A
(-1,0)
7
Q
what coordinate corresponds to 3π/2?
A
(0,-1)
8
Q
which coordinate corresponds to cosine? (x or y)
A
x
9
Q
which coordinate corresponds to sine? (x or y)
A
y
10
Q
what is cos(0)?
A
1
11
Q
what is sin(0)?
A
1
12
Q
cos(90)
A
0
13
Q
cos(270)
A
0
14
Q
cos(210)
A
-√3/2
15
Q
sin(135)
A
√2/2
16
Q
cos(330)
A
√3/2
17
Q
sin(270)
A
-1
18
Q
cos(180)
A
-1
19
Q
sin(210)
A
-1/2
20
Q
cos(30)
A
√3/2
21
Q
cos(135)
A
-√2/2
22
Q
cos(315)
A
√2/2
23
Q
cos(150)
A
-√3/2
24
Q
cos(240)
A
-1/2
25
cos(120)
-1/2
26
sin(180)
0
27
cos(225)
-√2/2
28
sin(60)
√3/2
29
sin(45)
√2/2
30
cos(45)
√2/2
31
sin(330)
-1/2
32
sin(90)
1
33
sin(150)
1/2
34
sin(300)
-√3/2
35
sin(120)
√3/2
36
sin(225)
-√2/2
37
sin(30)
1/2
38
sin(360)
0
39
sin(240)
-√3/2
40
cos(360)
1
