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Correct option is D
The image of focus (−1,−1) upon the tangent y=3x−8 is the point (5,−3) . It will lie on the directrix. Slope of directrix =−7−513+3=−18Its equation isy+3=−18(x−5) or x+8y+19=0∴ Latus rectum =2×( Distance of focus from directrix )=2×|−1−8+19|65=2065Talk to our academic expert!
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