(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

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.

3. 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.

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# Homework Help: Vectors ; specifically cross product application

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