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True-False Quiz Questions 1 to 4: False Statements about Vectors, Dot & Cross Products
In this video I go over the first 4 questions of the True-False Quiz on the Vectors and the Geometry of Space Chapter. These 4 questions are all false, and I discuss why for each question. The first falsely states that the dot product is a vector. The second falsely equates the length of a vector sum as the sum of its vector lengths. The third forgets the cosine function in the length of a dot product formula, and the 4th forgets the sine functions in the length of a cross product formula.
Time stamps:
- True-False Quiz for Vectors and the Geometry of Space: 0:00
- Question 1: False, dot product is not a vector: 0:11
- Question 2: False, adding vectors has a different length than their individual lengths: 1:14
- Question 3: False, length of dot product formula is missing a cosine function: 4:50
- Question 4: False, length of cross product formula is missing a sine function: 6:35
- For perpendicular vectors, the sine function is equal to 1: 7:40
Full video and playlists:
- Full video and playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0GiYS2qR98dzUjsx-0PRPbC
- Notes: https://peakd.com/hive-128780/@mes/vectors-geometry-true-false-quiz
- Vectors and the Geometry of Space: https://www.youtube.com/playlist?list=PLai3U8-WIK0FjJpwnxwdrOR7L8Ul8VZoZ .
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