st-line

Question: If the equation $y=mx+c$ and $x\cos \alpha +y\sin \alpha =p$ represents the same straight line, then

1) $p=c\sqrt{1+{{m}^{2}}}$

2) $c=p\sqrt{1+{{m}^{2}}}$

3) $cp=\sqrt{1+{{m}^{2}}}$

4) ${{p}^{2}}+{{c}^{2}}+{{m}^{2}}=1$

Solution:

Explanation: No Explanation

Slope of line Equation of line in different forms

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