Goniometria Flashcards
1
Q
cos(A-B) =
A
cosAcosB + senAsenB
2
Q
cos(A-B) =
A
cosAcosB - senAsenB
3
Q
sen(A-B) =
A
senAcosB - senBcosA
4
Q
sen(A+B) =
A
senAcosB + senBcosA
5
Q
sen(2A) =
A
2senAcosA
6
Q
cos(2A) =
A
cos^2 A - sen^2 A
7
Q
sen(A/2) =
A
+- radice [( 1 -cos^2 A ) /2]
8
Q
cos(A/2) =
A
+- radice [( 1 +cos^2 A ) /2]
9
Q
sen^2 A =
A
( 1-2cosA)/2
10
Q
cos^2 A =
A
( 1+2cosA)/2
11
Q
senAcosA =
A
sen (2A)/2
