HP 33s - Manual (Page 224)

15–2 Mathematics Programs
Vector addition and subtraction:
v
1
+ v
2
= (X + U)i + (Y + V)j + (Z + W)k
v
2
– v
1
= (U – X)i + (V – Y)j + (W – Z)k
Cross product:
v
1
× v
2
= (YW – ZV )i + (ZU – XW)j + (XV – YU)k
Dot Product:
D = XU + YV + ZW
Angle between vectors ( γ):
G = arccos
2 1
R R
D
×
where
v
1
= X i + Y j + Z k
and
v
2
=U i + V j + W k
The vector displayed by the input routines (LBL P and LBL R) is V
1
.