A geometry problem by Saswat Prakash
Geometry
Level
pending
If a,b,c are three noncoplanar unit vectors and a#(b#c)=0.6 b+0.8 c take # as cross product . Then dot product of a,c is a.c=p/q ;where p,q are coprime integers. what is the value of p+q?
8
6
4
9
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1 solution
using laws of vector product we get a.c=0.6=3/5 so p+q=3+5=8