physics
posted by Anonymous .
An observer, whose eyes are 1.87 m above the ground, is standing 27.0 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 18.0° above the horizontal. How tall is the tree?

1.87m + 27.0m tan(18.0°)