double angle formulae Flashcards by Isabelle Wee

Q

sin 2A

A

2 sinAcosA

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

cos 2A

A

cos^2(A) - sin^2(A)
2cos^2(A) - 1
1 - 2sin^2(A)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

tan 2A

A

2 tan A/1 - tan^2(A)

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

sin A (extended)

A

2 sin A/2 cos A/2

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

sin 4A

A

2 sin2Acos2A

How well did you know this?

1

Not at all

2

3

4

5

Perfectly