How far above the ground where gina was standing was the helicopter

An observer, whose eyes are 2.00 m above the ground, is standing 39.3 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 18.7° above the horizontal.

you may having too much sleep.. a good night sleep consists of about 7 hours. more than that could be the reason you're still tired throughout the day.

alzheimer's disease is a brain disease where you forget things that happened moments, even seconds before hand. reward me plz