Question 1109264
*[illustration tr4.png].
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From the diagram,
{{{A+60+90=180}}}
{{{A=30}}}
The relationship between the slope of the line and the angle it makes with the x axis, {{{alpha}}}, is,
{{{m=tan(alpha)}}}
{{{m=tan(30)}}}
{{{m=sqrt(3)/3}}}
You cam find the x-intercept, 
{{{sin(30)=2/X}}}
{{{X=2/0.5}}}
{{{X=4}}}
So,
{{{0=(sqrt(3)/3)(-4)+b}}}
{{{b=(4/3)sqrt(3)}}}
Finally,
{{{y=(sqrt(3)/3)x+(4/3)sqrt(3)}}}