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# HL Math question?

Given line r = (1, 2, 3) + t<3, 4, 5>, find the vector perpendicular to it.

<3, 4, 5><1, 2, k> = 0. The line r is within plane B, which has point (1, 4, 5), write the equation of Plane B.

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- ted sLv 74 weeks ago
there are an infinity of answers for a perpendicular vector.....going through x = 1 & y = 2 we can choose k = - 11 / 5 = z...

plane B : 2 ( x - 1 ) + 6 ( y - 4 ) - 6 ( z - 5) = 0

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