Unit 6 Flashcards
1
Q
sin^2x + cos^2x
A
1
2
Q
tan^2x + 1
A
sec^2x
3
Q
1 + cot^2x
A
csc^2x
4
Q
-sin(2x)
A
2sinxcosx
5
Q
-cos(2x)
A
cos^2x - sin^2x
6
Q
-tan(2x)
A
2tanx / 1 - tan^2x
7
Q
sin (x/2)
A
plus/minus squareroot 1/2(1 - cosx)
8
Q
cos (x/2)
A
plus/minus squareroot 1/2(1 + cosx)
9
Q
-tan(x/2)
A
plus/minus squarerooted 1 -cosx / 1 + cosx
10
Q
-sin(x+y)
A
sinxcosy + sinycosx
11
Q
-sin(x-y)
A
sinxcosy - sinycosx
12
Q
-cos(x+y)
A
cosxcosy - sinxsiny
13
Q
-cos(x-y)
A
cosxcosy + sinxsiny
14
Q
-tan(x+y)
A
tanx+tany/1-tanxtany
15
Q
-tan(x-y)
A
tanx-tany/1+tanxtany
