Biology Reference
In-Depth Information
232
Then, we also have for the dot product:
where
is the angle between vectors
a
and
b
. Similarly, for the cross
product:
The tetrahedral angle,
can be calculated with the use of the dot product.
Consider
a
=
i
+
j
+
k
,
and
b
=
-
i
-
j
+
k
.
Therefore,
or
i.e.
which is usually rounded to 110
0
(Chapter 5).
