st-line

Question: The equation to the straight line passing through the point $(a{{\cos }^{3}}\theta ,\ a{{\sin }^{3}}\theta )$ and perpendicular to the line $x\sec \theta +y\,\text{cosec}\,\theta =a,$ is

1) $x\cos \theta -y\sin \theta =a\cos \ 2\theta $

2) $x\cos \theta +y\sin \theta =a\cos \ 2\theta $

3) $x\sin \theta +y\cos \theta =a\cos \ 2\theta $

4) None of these

Solution:

Explanation: No Explanation

Slope of line Equation of line in different forms

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