141.If O be the origin and the coordinates of P be (1, 2, -3), then find the equation of the plane passing through P and perpendicular to OP.
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142.If the line drawn from (4, –1, 2) meets a plane at right angles at the point (–10, 5, 4), then find the equation of the plane.
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143.Find the vector and Cartesian equation of the plane passing through the point (1, 2, 3) and perpendicular to the line with direction ratios 2, 3, - 4.
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144.Find the vector and cartesian equations of the plane which passes through the point (5, 2, – 4) and perpendicular to the line with direction ratios 2, 3, –1.