How to determine unit vector perpendicular to two coplaner vectors and angle between two vectors

Model : CASIO fx-570MS, CASIO fx-991MS

If you have read the previous post on Determination of Cross Product and Absolute Value of a vector. then determination of angle and unit vector in calculator would be very easy.In order to determine unit vector, cross product of two vector has to be divided with the value of cross product.Again in order to determine angle between two vector, dot product of two vector has to be divided with the value of dot product.The formulas are as follows..

unit vector ẑ = (A*B) / |A*B|
angle θ = (A.B) / AB

Determination of Cross Product and Absolute Value of a vector.

Model : CASIO fx-570MS, CASIO fx-991MS

Manual determination of cross product requires determinant which is confusing and may provide unwanted error in result.You can easily create vectors in calculator and perform cross product within a minute.

Example: Find the cross product of vectors A= 3i-2j+5k and B= i+4j-3k. Also find the absolute value of vector A.(Ans: -14i+14j+14k and 6.1644)

Solution: