If the position vectors of three points A,B,C are ^i+^j+^k,2^i+3^j−4^k and 7^i+4^j+9^k, then the unit vector perpendicular to the plane of the triangle ABC is:

If the position vectors of three points A,B,C are ^i+^j+^k,2^i+3^j−4

1.	If the position vectors of three points A,B,C are ^i+^j+^k,2^i+3^j−4^k and 7^i+4^j+9^k, then the unit vector perpendicular to the plane of the triangle ABC is:
Answer» If the position vectors of three points $A, B, C$ are $^i +^j +^k, 2^i + 3^j - 4^k$ and $7^i + 4^j + 9^k$ , then the unit vector perpendicular to the plane of the triangle $A B C$ is:

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If the position vectors of three points A,B,C are ^i+^j+^k,2^i+3^j−4^k and 7^i+4^j+9^k, then the unit vector perpendicular to the plane of the triangle ABC is:

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