(meter)

This tree is about 7 meters high. (2)① As shown in the figure, (m)

(meter)

(meter)

A: When the tree forms an angle of 45 with the ground, the shadow length is about 13m.

(2) As shown in the figure, the shadow length is the largest when the tree forms an angle of 60 with the ground (or when the tree is perpendicular to the light or when the light is tangent to the radius).

(meter)

A: The maximum shadow length of a tree is about 14m.