Trigonometry Flashcards
1
Q
sin(A+-B)
A
sinAcosB +- cosAsinB
2
Q
cos(A+-B)
A
cosAcosB +- sinAsinB
3
Q
tan(A +- B)
A
(tanA +- tanB) / (1 -+ tanAtanB)
4
Q
1 + cot^2(A)
A
cosec^2(A)
5
Q
1 + tan^2(A)
A
sec^2(A)
6
Q
2sinAcosB
A
sin(A+B) + sin(A-B)
7
Q
2sinAsinB
A
cos(A-B) - cos(A+B)
8
Q
2cosAcosB
A
cos(A-B) + cos(A+B)
