Question 577762
{{{drawing(350,220,-2,33,-2,20,
triangle(0,0,17.32,0,17.32,10),
green(line(-3,0,0,0)),green(line(17.32,0,33,0)),
red(arrow(17.32,10,30,17.32)), locate(30,18,SUN),
locate(-0.3,0,S),locate(17,0,B),locate(17,11.5,P),
locate(17.4,5.5,pole),locate(7.5,1.5,shadow)
)}}} {{{tan(BSP)=height/(sqrt(3)*height)=1/sqrt(3)=sqrt(3)/3}}} --> {{{BSP=30^o}}}