Consider the vectors a = 3i + 2j + 6k and b = −9i − 6j + 2k, where i, j, and k are mutually-perpendicular unit vectors forming a right-handed system. calculate: 1) The scalar product a · b. 2) The vector product a × b. 3) The direction cosines of a. 4) The angle between a and b, expressed in degrees to two decimal places.

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Chapter2: Vectors
Section: Chapter Questions
Problem 82AP: Find the scalar components of three-dimensional vectors G and H in the following figure and write...
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Consider the vectors a = 3i + 2j + 6k and b = −9i − 6j + 2k, where i, j, and k are mutually-perpendicular unit vectors forming a right-handed system.

calculate:

1) The scalar product a · b.

2) The vector product a × b.

3) The direction cosines of a.

4) The angle between a and b, expressed in degrees to two decimal places.

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