Unit 5 formulas Flashcards
1
Q
sin(u+v)
A
sinucosv+cosusinv
2
Q
sin(u-v)
A
sinucosv-cosusinv
3
Q
cos(u+v)
A
cosucosv-sinusinv
4
Q
cos(u-v)
A
cosucosv+sinusinv
5
Q
tan(u-v)
A
(tanu-tanv)/(1+tanutanv)
6
Q
tan(u+v)
A
(tanu+tanv)/(1-tanutanv)
7
Q
sin2A
A
2sinAcosA
8
Q
cos2A
A
cos^2A-sin^2A
or 2cos^2A-1
or 1-2sin^2A
9
Q
tan2A
A
(2tanA)/(1-tan^2A)
10
Q
sin A/2
A
+/- √(1-cosA)/2)
11
Q
cos A/2
A
+/- √(1+cosA)/2
12
Q
tan A/2
A
(1-cosA)/sinA
(sin A) /1+cos A
