Write the length of the perpendicular drawn from the point `P(3,5, 12)` on x-axis.

Explanation

Given: point `P(3, 5, 12)` To find: length of the perpendicular drawn from the point P from the x-axis .


Formula used: The distance between any two points` (a, b, c)` and `(m, n, o) `is given by, `sqrt[ ( a − m )^2 + ( b − n )^2 + ( c − o )^2 ]`


As, y and z coordinate on x-axis are zero Let point D on x-axis is` (x, 0, 0)` .


Direction cosines of z-axis are `(1, 0, 0)` Direction cosines of `PD` are` (3 – x, 5 – 0, 12 – 0) = (3 – x, 5, 12)`


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