trigonomentry Flashcards
1
Q
2 pi =
A
360
2
Q
pi=
A
180
3
Q
pi/2=
A
90
4
Q
pi/3=
A
60
5
Q
pi/4
A
45
6
Q
pi/6
A
30
7
Q
small angle aproximations:
sin@=
cos@=
tan@=
A
in formula booklet
8
Q
sin 30=
A
1/2
9
Q
sin 60=
A
(root 3 )/2
10
Q
sin 45 =
A
1/root 2
11
Q
cos 30=
A
(root 3)/2
12
Q
cos 60=
A
1/2
13
Q
cos 45=
A
1/ root 2
14
Q
tan 30=
A
1/ root 3
15
Q
tan 60=
A
root 3
16
Q
tan 45=
A
1
17
Q
tan @ =
A
sin @ / cos@
18
Q
solving for solutions of sin @
A
1st sin-1(@)
2nd 180-1st
3rd +- 360
19
Q
solving solutions for cos@
A
1st cos-1(@)
2nd 360 - 1st
3rd +- 360
20
Q
solving solutions for tan@
A
1st tan-1(@)
2nd and 3rd +- 180
21
Q
cosec@ =
A
1/sin@
22
Q
1/cosec@=
A
sin@
23
Q
sec@ =
A
1/cos@
24
Q
1/sec@ =
A
cos@
25
cot@ =
1/tan@ = cos@/sin@
26
co-function: sin@ =
cos(90-@)
27
co fucntion: cos@ =
sin(90-@)
28
sin^2+cos^2 =
1
29
sec^2@=
1+tan^2@
30
cosec^2@ =
1+cot^2@
31
addtion formula
in formula booklet
32
sin2@ =
2sin@cos@
33
cos2@ =
2cos^2@-1
1-2sin^2@
cos^2 - sin^2@
34
tan2@ =
2tan@/1-tan^2@
35
sin^2 @ =
1/2 -1/2 cos2@
rearrange double angle formula, useful in integration
36
cos^2@=
1/2 +1/2cos2@
rearrange double angle formula useful in integration
37
in Rcos(@+&) if Rcos@ = a and Rsin@ = b then
r= root(a^2 + b^2)
tan& = b/a
