formulae Flashcards
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
sin( A+B)
A
sinAcosB + cosAsinB
4
Q
sin(A-B)
A
sinAcosB - cosAsinB
5
Q
cos(A+B)
A
cosAcosB - sinAsinB
6
Q
cos(A-B)
A
cosAcosB + sinAsinB
7
Q
tan( A+B)
A
(tanA + tanB)/(1- tanAtanB)
8
Q
tan( A-B)
A
(tanA - tanB)/(1+ tanAtanB)
9
Q
what are the SUVAT equations?
A
V=U+AT
V^2= U^2 + 2AS
S= UT + 0.5(A)(T^2)
S= VT - 0.5(A)(T^2)
S= 0.5(U+V)T
10
Q
cosine rule
A
a^2= (b^2) + (c^2) - 2bc cos(A)
