Following is a discussion on the Reviewer item titled: 004 Components of a 3D force with given angles. Feel free to add your own comments!
why is the sum of squares of direction cosines of all given angles not equal to 1?
Maybe you used 40° for θx. Note that θx is the angle between vector A and the the x-axis. From the figure, the 40° angle is not from vector A.
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MATHalino
why is the sum of squares of direction cosines of all given angles not equal to 1?
Maybe you used 40° for θx. Note that θx is the angle between vector A and the the x-axis. From the figure, the 40° angle is not from vector A.
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