Canon F-789SGA User Instructions page 63

Example : Based on Vector A=(-1, 0, 1) and Vector B=(1, 2, 0),
determine the size of the angle
unit 1 vector perpendicular to both A and B.
Unit 1 vector perpendicular to both A and B=
< Result:
Key in operation
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Abs
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Abs
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Abs
cos = , whereas = cos
=(0.666666666, -0.333333333, 0.666666666) >
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(angle unit: Deg) and a
-1
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