Question

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

Answer 1

what eqns have you made using the info given ?

Answer 2

i cant even figure out the diagram

Answer 3

you dont need a diagram, use the formula for distance of a line from a line..using the info,,you should get 2 eqns..

Answer 4

okay

Answer 5

correction : formula for dist of point from LINE ..