Casio fx-570MS - Manual (Page 42)

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Explanation Explanation
Example 2 Example 2
What type of triangle would be produced by the vertices of
the three points A = (5, 1, 2), B = (1, 0, 1), and C = (2, 4, 2)?
When determining the properties of a triangle,
the length of a side is determined using the
absolute value of its vector, while the angle formed by two
sides is determined using the inner product of their vectors.
For this problem, first lets determine the lengths of the three
sides of triangle ABC.
1 .
Select the VCT Mode.
F F F 3
2 .
Specify the vector name and dimension, and then input its elements.
The following shows input of the elements of Vector A.
• Specify Vector A.
A z 1 (Dim)
1 (A)
• Specify three dimensions.
3
=
• 3-dimensional Vector A is displayed as (A1 A2 A3). First, input 5 for A1.
5 =
Operation
Vector Problems
B
C(2, 4, 2)
(1, 0, 1)
A(5, 1, 2)
x
z
y