If O is the origin, OP = 3 with direction ratios proportional to −1, 2, −2 then the coordinates of P are

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(−1, 2,−2) Let the coordinates of P be (x, y, z). Then, Direction ratios of OP= Coordinates of P− Coordinates of O −1, 2, 2 = (x−0), (y−0), (z−0) Thus, coordinates of P are (−1, 2,−2).

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