vectors-m

Question: If a, b, c are position vector of vertices of a triangle $ABC$, then unit vector perpendicular to its plane is

1) $a\times b+b\times c+c\times a$

2) $\frac{a\times b+b\times c+c\times a}{|a\times b+b\times c+c\times a|}$

3) $\frac{a\times b}{|a\times b|}$

4) None of these

Solution:

Explanation: No Explanation

Vector Product Cross Product of two vectors

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