Question

construct 30 degree angle with using compass

Answer 1

draw AB
Draw an arc from A making a small semicircle.
draw an arc cutting previous arc from point where semicentre and line intersects.
draw a straight line from that point of intersection and an angle 120 deg.
is formed.
now bisect the angle so 60deg. is formed and again bisect the angle then30 deg. is formed.
.