Trig Review Flashcards by Kailey Pemberton | Brainscape

Q

Sin2x

A

2sinx•cosx

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Pythagorean Identities

A

sin^2x + cos^2x =1
1 + tan^2x = sec^2x
1 + cot^2x = csc^2x

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Cos2x

A

cos^2x -sin^2x

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Tan2x

A

2tanx
——–
1-tan^2x

How well did you know this?

1

Not at all

2

3

4

5

Perfectly