Trig Flashcards
1
Q
Cosec a =
A
1 over sin a
2
Q
Cot a =
A
1 over tan a
3
Q
Sin a over cos a =
A
Tan a
4
Q
Cos a over sin a =
A
Cot a
5
Q
1 + tan squared a =
A
Sec squared a
6
Q
1 + cot squared a =
A
Cosec squared a
7
Q
Sin(A+B) =
A
SinAcosB + cosAsinB
8
Q
Cos(A+B) =
A
CosAcosB -sinAsinB
9
Q
Tan(A+B) =
A
(TanA + tanB )divided by 1-tanAtanB
10
Q
Sin2A=
A
2sinAcosA
11
Q
Cos2A =
A
=Cos (squared) A -sin (squared)A
= 2cos (squared) A -1
= 1- 2 sin (squared) A
12
Q
Tan 2A =
A
(2tanA) divided by (1-tan squared A)
13
Q
Sec a =
A
1 over cos a
