The sun is 21° above the horizon. it makes a 54 m -long shadow of a tall tree. how high is the tree? express your answer in meters.

Height of the tree, h = 20.72 meters

Explanation:

Given that,

The sun is 21° above the horizontal,

Length of the shadow, d = 54 m

Let h is the height of the tree. It can be calculated using trigonometry as :

Here, perpendicular is h and base is 54 meters.

h = 20.72 meters

So, the height of the tree is 20.72 meters. Hence, this is the required solution.

temp rises, and expansion

d. air pressure decreases as altitude increases.