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The straight line passing through $P (x_{1}, y_{1})$ and making an angle $α$ with x-axis intersects Ax+By+C=0 in Q then PQ=

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|Ax1+By1+C|A2+B2

|Ax1+By1+C|Acosα+Bsinα

|Ax1+By1+C||Acosα+Bsinα|

|Ax1+By1+C|A2cos2α+B2sin2α

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detailed solution

Correct option is C

Let PQ = r Q (x1±rcosθ,y1±rsinθ) sub in Ax+By+C=0

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The straight line passing through P(x1,y1) and making an angle α with x-axis intersects Ax+By+C=0 in Q then PQ=

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Ready to Test Your Skills?

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The straight line passing through $P (x_{1}, y_{1})$ and making an angle $α$ with x-axis intersects Ax+By+C=0 in Q then PQ=