Double Angle Identities Flashcards
All formula are listed
1
Q
1) cos 2A = ?
A
cos^2 A - sin^2 A (Vanilla)
2
Q
2) cos 2A = ?
A
2 cos^2 A - 1 (Chocolate)
3
Q
3) cos 2A = ?
A
1 - 2 sin^2 A (Strawberry)
4
Q
sin 2A = ?
A
2 sin A cos A
5
Q
tan 2A = ?
A
2 tan A / 1 - tan^2 A
