Trig equations Flashcards
1
Q
sec(x) =
A
1 / cos(x)
2
Q
cosec(x) =
A
1 / sin(x)
3
Q
cot(x) =
A
1 / tan(x)
OR
cos(x) / sin(x)
4
Q
sec² (x) =
A
1 + tan² (x)
5
Q
cosec² (x) =
A
1 + cot² (x)
6
Q
sin2A =
A
2sinAcosA
7
Q
cos2A =
A
cos² A - sin² A
2cos²A - 1
1 - 2sin²A
8
Q
tan2A =
A
2tanA / 1-tan²A
9
Q
tan(A+B) =
A
tan(A)+tan(B) / 1 - tan(A)tan(B)
