3 D
https://minihotelier.com/blog/2016/12/29/3-d-3/Aptitude
The angle between the planes x+y+2z=6 and 2x-y+z=9 is
a) 45 b) 30 c) 60 ...
dinesh
ppboomshankar@gmail.comSubscriberSOLVE - ΜΔΓΗŠ
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