Trig Equations Flashcards
1
Q
sin^2 + cos^2
A
1
2
Q
1 + tan^2
A
sec^2
3
Q
1 + cot^2
A
csc^2
4
Q
sin(x + y)
A
sinxcosy + sinycosx
5
Q
sin(x - y)
A
sinxcosy - sinycosx
6
Q
cos(x + y)
A
cosxcosy - sinxsiny
7
Q
cos(x - y)
A
cosxcosy + sinxsiny
8
Q
tan(x + y)
A
tanx + tany / 1 - tanxtany
9
Q
tan(x-y)
A
tanx - tany / 1 + tanxtany
10
Q
sinx + siny
A
2sin(x + y / 2)cos(x - y / 2)
11
Q
sinx - siny
A
2cos(x + y / 2)sin(x - y / 2)
12
Q
cosx + cosy
A
2cos(x + y / 2)cos(x - y / 2)
13
Q
cosx - cosy
A
-2sin(x + y / 2)sin(x - y / 2)
14
Q
sinxsiny
A
1/2 cos(x - y) - cos(x + y)
15
Q
cosxcosy
A
1/2 cos(x - y) + cos(x + y)
