- #1
kapitanma
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Homework Statement
vector A = 1.5i + 6.7j - 7.4k
vector B= -8.2i + 6.5j + 2.3k
(f) What is the magnitude of the component of vector A perpendicular to the direction of vector B but in the plane of vector A and B.
The Attempt at a Solution
This part of the problem has me kinda stumped. My attempt at the solution was using the application of the cross product : C = ABsin(theta).
I calculated the angle between the two as 82.43 degrees, and realized that this formula gave me the same thing as simply taking the magnitude of the cross product vector which I calculated to be 107.207.
This shows me that my fundamental approach to this problem is incorrect, but I have no idea where to go with it. Any pointers would be appreciated.