Double Angle Flashcards
1
Q
cos2x
A
1-2sin^2(x)
2cos^2(x)-1
cos^2(x) - sin^2(x)
2
Q
sin2x
A
2sinxcosx
3
Q
tan2x
A
2tanx/1-tan^2(x)
cos2x
1-2sin^2(x)
2cos^2(x)-1
cos^2(x) - sin^2(x)
sin2x
2sinxcosx
tan2x
2tanx/1-tan^2(x)