- #1
Jesssa
- 51
- 0
hey,
i've been trying to work out how to determine the sign of cross products of unit vectors,
for example in cylindrical,
r x z = - theta
theta x z = r
r x theta = z
i can't figure out the sign,
r x z = |r||z|sinβ theta where β is the angle between them, which is 90°,
and the length of the vectors are 1
how can you tell that its actually -theta?
i've been trying to work out how to determine the sign of cross products of unit vectors,
for example in cylindrical,
r x z = - theta
theta x z = r
r x theta = z
i can't figure out the sign,
r x z = |r||z|sinβ theta where β is the angle between them, which is 90°,
and the length of the vectors are 1
how can you tell that its actually -theta?