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Mathematics - Straight line Question with Solution | TestHub

MathematicsStraight lineGeneral (Standard forms)Medium2 minPYQ_2019
MathematicsMediumsingle choice

A straight lineLat a distance of4units from the origin makes positive intercepts on the coordinate axes and the perpendicular from the origin to this line makes an angle of60°with the linex+y=0.Then an equation of the lineLis:
Note: In actual JEE Main paper, two options were correct for this question. Hence, we have changed one option.

Question diagram: A straight line L at a distance of 4 units from the origin m

Options:

Answer:
A
Solution:


Hence, equation of required line using normal form is
xcos15°+ysin15°=4orxcos75°+ysin75°=4
  (3+1)x+(3-1)y=82or  (3-1)x+(3+1)y=82

Stream:JEESubject:MathematicsTopic:Straight lineSubtopic:General (Standard forms)
2mℹ️ Source: PYQ_2019

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