1.

If pand q are the lengths of perpendiculars from the origin tothe lines x cos θ – ysin θ = kcos 2θ and x sec θ+y cosec θ =k, respectively, prove that p2+ 4q2 =k2

Answer»

If p
and q are the lengths of perpendiculars from the origin to
the lines x cos θy
sin θ = k
cos 2θ and x sec θ+
y cosec θ =
k, respectively, prove that p2
+ 4q2 =
k2



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