formulae Flashcards
(6 cards)
1
Q
sin2A
A
2sinAcosA
2
Q
tan2A
A
( 2tanA ) / ( 1 + tan^2 A )
3
Q
cos2A
A
cos^2 A - sin^2 A
1- 2sin^2 A
2cos^2 A - 1
3
Q
cos^2 A
A
( 1 + cos2A)/2
3
Q
sin^2 A
A
( 1-cos2A)/2
4
Q
trig functions
A
sin^2x + cos^2x =1
1 + cot^2x = cosec^2x
tan^2x + 1 = sec^2x
