Chapter 10 Flashcards
1
Q
Cos (alpha-beta)
A
CosACosB + SinASinB
2
Q
Sin (alpha+beta)
A
SinACosB + CosASinB
3
Q
Sin (alpha-beta)
A
SinACosB - CosASinB
4
Q
Cos (alpha+beta)
A
CosACosB - SinASinB
5
Q
Tan (alpha+beta)
A
(Tanalpha+tanbeta)/1-tanalpha*tanbeta
6
Q
Tan (alpha-beta)
A
(Tanalpha-tanbeta)/1+tanalpha*tanbeta
7
Q
Sin 2alpha
A
2sinalphacosalpha
8
Q
Cos 2alpha (3)
A
Cos^2a - sin^2a
2cos^2a-1
1-2sin^2a
9
Q
Tan 2alpha
A
2tana/1-tan^2a
10
Q
Sin a/2
A
+/- square root of 1-cosa/2
11
Q
Cos a/2
A
+/- square root of 1+cosa/2
12
Q
Tan a/2
A
+/- square root of (1-cosa)/(1+cosa)
