Sum and Difference Identites Flashcards
1
Q
cos(A+B)=
A
cosAcosB-sinAsinB
2
Q
sin(A+B)=
A
sinAcosB+cosAsinB
3
Q
tan(A+B)=
A
tanA+tanB/1-tanAtanB
4
Q
cos(A-B)=
A
cosAcosB+sinAsinB
5
Q
sin(A-B)=
A
sinAcosB-cosAsinB
6
Q
tan(A-B)=
A
tanA-tanB/1+tanAtanB