unit circle (basic trig) Flashcards
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
