There is a vertical pole perpendicular to the horizontal plane. From point P on the plane, 2 projectiles are fired simultaneously at different velocities. The first projectile is fired at an angle of 30^o and it hits the foot of the pole. The second projectile is fired at an angle of 60^o and it hits the top of the pole

It is further known that the projectiles hit the pole at the same time.

Find the angle subtended by the pole from P.