Geo2.1

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Find the equation of the straight line making an angle of 120^\circ\, with the X-axis in positive direction and passing through the point (0,-2)\,

Slope of the straight line is

m=\tan 120^\circ\,

m=\frac{-1}{\sqrt{3}}\,

The equation of straight line passing through (x1,y1) and slope m is

y-y_1=m(x-x_1)\,

y+2=\frac{-1}{\sqrt{3}}(x-0)\,

\sqrt{3}y+2\sqrt{3}+x=0\,


Main Page:Geometry:Straight Lines-I

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