# <span lang="EN-US

Given: the equation of the line that passes through P(x1, y1) and makes an angle of θ with the x–axis.

To find:

Length of PQ.

Explanation: Let PQ = r
Then, the coordinates of Q are given by

Formula Used:  Thus, the coordinates of Q are Clearly, Q lies on the line ax + by + c = 0. r PQ Thus, length PQ Rate this question :

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