Casio fx-991EX - VECTOR Mode; Vector Operations and Angle Calculation

fx-991EX Quick Start Guide 17
The fx-991EX is capable of handling vector calculations with vectors in 2 or 3 dimensions.
From the Main Menu, use the arrow keys to highlight the
Vector icon and press p or press 5.
Let vectors u and v be dened in the 3-dimensional plane by the
following: u = 2i + 3j – 2k and v = 3i - 4j + 5k
Dene u as Vector A with dimension 3.
Press 1(VctA)3(Dimension).
Enter the components of the vector and press p after each one
to move to the next value.
Dene v as Vector B with dimension 3.
Press i1(Dene Vector).
Press 2(VctB)3(Dimension).
VECTOR