Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If p and q are the lengths of the perpendiculars from the origin on the lines,
x cosec α − y sec α = kcot 2α and
x sin α + y cos α = k sin 2α
respectively, then k 2 is equal to:
Text Solution
Verified by ExpertsThe correct answer is:
A
First line is 
...(i)
second line is x sin α + y cos α = k sin 2α
⇒ q = ∣ ksin2α| (ii)
Hence 4p 2 + q 2 = k 2 (From (i) & (ii))
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