Everything trig Flashcards
1
Q
sin(x+90)
A
cos(x)
2
Q
Where do you start from on the CAST diagram
A
0
3
Q
sin(180-x)
A
sin(x)
4
Q
sin(180+x)
A
-sin(x)
5
Q
sin(360-x)
A
-sin(x)
6
Q
cos(180-x)
A
-cos(x)
7
Q
cos(180+x)
A
-cos(x)
8
Q
cos(360-x)
A
cos(x)
9
Q
tan(180-x0
A
-tan(x)
10
Q
tan(180+x)
A
tan(x)
11
Q
tan(360-x)
A
-tan(x)
12
Q
In the CAST diagram, what is the value x, or theta?
A
Number between 0 and 90 (0<x<90)
13
Q
sin(0)
A
0
14
Q
sin(30)
A
1/2
15
Q
sin(45)
A
√2/2
16
Q
sin(60)
A
√3/2
17
Q
sin(90)
A
1
18
Q
cos(0)
A
1
19
Q
cos(30)
A
√3/2
20
Q
cos(45)
A
√2/2
21
Q
cos(60)
A
1/2
22
Q
cos(90)
A
0
23
Q
tan(0)
A
0
24
Q
tan(30)
A
√3/3
25
tan(45)
1
26
tan(60)
√3
27
tan(90)
impossible, or ±∞
28
sin²x+cos²x
1
29
tan(x)≡
sin(x)/cos(x)
30
sin²x
(sin(x))²
31
tan2x≡
sin2x/cos2x
32
tan²x≡
sin²x/cos²x
