Let P be any point (except the origin) on the curve r = f(θ). If Ï is

Let P be any point (except the origin) on the curve r = f(θ). If ψ is the angle between the tangent line at P and the radial line OP, show that

Observe that ψ = Φ - θ in the figure

Transcribed Image Text:

tan ψ- r= f(9)