16. If p and q are the lengths of perpendiculars from the origin to the lines xcosθ − ysinθ = kcos2θ and xsecθ + ycosecθ = k, respectively, prove that .
16. If p and q are the lengths of perpendiculars from the origin to the lines xcosθ − ysinθ = kcos2θ and xsecθ + ycosecθ = k, respectively, prove that .
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