coordinate

Question: The locus of the mid-point of the distance between the axes of the variable line $x\cos \alpha +y\sin \alpha =p,$ where p is constant, is

1) ${{x}^{2}}+{{y}^{2}}=4{{p}^{2}}$

2) $\frac{1}{{{x}^{2}}}+\frac{1}{{{y}^{2}}}=\frac{4}{{{p}^{2}}}$

3) ${{x}^{2}}+{{y}^{2}}=\frac{4}{{{p}^{2}}}$

4) $\frac{1}{{{x}^{2}}}+\frac{1}{{{y}^{2}}}=\frac{2}{{{p}^{2}}}$

Solution:

Explanation: No Explanation

Transformation of axes and Locus

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