Trig Identities Flashcards
1
Q
secA
A
1
———
cosA
2
Q
cosecA
A
1
———
sinA
3
Q
cotA
A
1
———
tanA
4
Q
1 + tan^2A
A
sec^2A
5
Q
Nth term
1) arithmetic
2) geometric
A
1) Un = a + (n-1)d
2) Un = ar^(n-1)
6
Q
Sun to infinity formula
A
a
——
1 - r
