Question

formulae of class 3d geometry​

Answer 1

Direction cosines of the z-axis is (0, 0, 1). The line will be perpendicular if a1a2+b1b2+c1c2 = 0, and parallel if a1/a2 = b1/b2 = c1/c2. 11. Equation of a plane: General form: ax+by+cz+d = 0, where a, b, c are not all zero, a, b, c, d ∈ R.

Answer 2

Answer:

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