Unit Circle Flashcards
1
Q
cos(11∏/6)
A
Also cos(330). It equals √3/2.
2
Q
cos(∏)
A
Also cos(180). It equals -1.
3
Q
cos(∏/4)
A
Also cos(45). It equals √2/2.
4
Q
cos(∏/2)
A
Also cos(90). It equals 0.
5
Q
sin(∏)
A
Also sin(180). It equals 0.
6
Q
cos(2∏/3)
A
Also cos(120). It equals -1/2.
7
Q
sin(7∏/4)
A
Also sin(315). It equals -√2/2.
8
Q
cos(5∏/6)
A
Also cos(150) It equals -√3/2.
9
Q
sin(2∏/3)
A
Also sin(120). It equals √3/2.
10
Q
cos(∏/6)
A
Also cos(30). It equals √3/2.
11
Q
sin(11∏/6)
A
Also sin(330). It equals -1/2.
12
Q
sin(∏/6)
A
Also sin(30). It equals 1/2.
13
Q
cos(5∏/3)
A
Also cos(300). It equals 1/2.
14
Q
cos(∏/3)
A
Also cos(60). It equals 1/2.
15
Q
sin(∏/3)
A
Also sin(60). It equals √3/2.