Trig Identities Flashcards
(11 cards)
1
Q
Cosecø=
A
cosecø=1/sinø
2
Q
Secø=
A
1/cosø
3
Q
Cotø=
A
cosø/sinø. or. 1/tanø
4
Q
Tanø=
A
sinø/cosø
5
Q
What Is the formula linking sin squared and cos squared
A
sin^2ø+cos^2ø=1
6
Q
What Is the Formula Linking Tan squared and sec squared
A
tan^2ø+1=sec^2ø
7
Q
What Is the Formula Linking Cot squared and Cosec squared
A
1+Cot^2ø=cosec^2ø
8
Q
Sin(2ø)=
A
2Sinøcosø
9
Q
Cos(2ø)=
A
Cos^2ø-sin^2ø
10
Q
Cos(2ø)=
A
1-sin^2ø. or. 2cos^2ø-1
11
Q
tan(2ø)=
A
2tanø/1-tan^2ø
