dubbelehoekformules Flashcards

1
Q

sin (2α)

A

2 sin (α) cos (α)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

cos (2α)

A

cos² (α) - sin² (α)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

gevolg 1 cos² (α) - sin² (α)

A

2 cos² (α) - 1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

gevolg 2 cos² (α) - sin² (α)

A

1 - 2 sin² (α)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

tan (2α)

A

2 tan (α) / 1 - tan² (α)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

sin (x) + sin (y)

A

2 sin (x+y/2) x cos (x-y/2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

sin (x) - sin (y)

A

2 cos (x+y/2) x sin (x-y/2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

cos (x) + cos (y)

A

2 cos (x+y/2) x cos (x-y/2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

cos (x) - cos (y)

A

-2 sin (x+y/2) x sin (x-y/2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly