st-line

Question: The equations of the lines which pass through the origin and are inclined at an angle ${{\tan }^{-1}}m$ to the line $y=mx+c,$ are

1) $x=0,\ \ 2mx+({{m}^{2}}-1)\ y=0$

2) $y=0,\ \ 2mx+({{m}^{2}}-1)\ y=0$

3) $y=0,\ \ 2mx+(1-{{m}^{2}})\ y=0$

4) None of these

Solution:

Explanation: No Explanation

Slope of line Equation of line in different forms

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