Suppose that the curve r=f(theta) cuts any ray in a constant angle?

As the angle W is constant for convenience we can write: tan(W)=1/k

Draw some curve in particular of this family, it is not surprising that it is known by the name of the logarithmic spiral. What if the angle (W) is 0 or pi/2 or - pi/ 2?

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Transcribed Image Text:

T T @y, - 1/2 < y < 1/2 yy 0. ≠ T T @y, - 1/2 < y < 1/2 yy 0. ≠