Double Angle Identities Flashcards by Martha DeLuzio | Brainscape

Q

1) Cos 2A

A

Cos^2A - Sin^2A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Sin 2A

A

2 sin A cos A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

2) Cos 2A

A

1 - 2sin^2A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

3) Cos 2A

A

2cos^2A - 1

How well did you know this?

1

Not at all

2

3

4

5

Perfectly