Determine the value of x if the vector perpendicular to A and B is given by C=(10,-4,-4)
The Attempt at a Solution
Find A cross B , let A cross B be D . Then D cross C = zero (since they are perpendicular to both A and B) . This sounds logic but there will not be an answer for x. What is wrong?
Then I tried to use dot product A dot C=0, and B dot C=0. Yet the answer of two x are different.
Please guide. Thanks