I have three planes:
3x +2y -z =18
3x – 8y -7z = -38
-22 + 18 -30 = -6
And I'd like to find normal vector to those planes, and then chech if these vectors are orthagonal to themselves, then check the if the planes are orthagonal. How can I do this thing? I'd be greateful for any help in this matter.
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