trigo Flashcards
1
Q
tanx
A
sinx/cosx
2
Q
secx
A
1/cosx
3
Q
cscx
A
1/sinx
4
Q
cotx
A
1/tanx
5
Q
pytagore
A
sin^2x + cos^2x=1
6
Q
tan^2x + 1
A
sec^2x
7
Q
cot^2x + 1
A
csc^2x
8
Q
sin(A+B)
A
sinAcosB+sinBcosA
9
Q
cos(A+B)
A
cosAcosB-sinAsinB
10
Q
sin^2(A)
A
1-cos(2A)/2
11
Q
cos^2(A)
A
1+cos(2A)/2
12
Q
sin(2A)
A
2sinAcosA
13
Q
cos(2A)
A
cos^2(A) - sin^2(A)
14
Q
sin^2x/cos^2x + cos^2x/cos^2x =
A
1/cos^2x donc sec^2x
