Identities Quiz Flashcards
1
Q
Sin double angle Id
A
sin(2A) = 2sinA * cosA
2
Q
1st cos double angle Id
A
cos(2A) = cos²A - sin²A
3
Q
2nd cos double angle Id
A
cos(2A) = 2cos²A-1
4
Q
3rd cos double angle Id
A
cos(2A) = 1-2sin²A
5
Q
Tan double angle Id
A
tan(2A) = 2tanA/1-tan²A
6
Q
Power reducing ids sin
A
sin²x= 1-cos2x/2
7
Q
Power reducing ids cos
A
cos²x = 1+cos2x/2
8
Q
Power reducing ids tan
A
tan²x = 1-cos2x/1+cos2x
9
Q
A
10
Q
A
