The measure of the angle of depression is 67 degrees.
<h3>
Given that</h3>
A helicopter is 665 feet above the ground.
A girl is looking up at the helicopter to form a line.
Her line of sight is 5 feet off the ground.
The distance between the girl and the helicopter is 280 feet.
<h3>We have to determine</h3>
What is the measure of the angle of depression from the helicopter to the girl’s line of sight?
<h3>According to the question</h3>
A helicopter is 665 feet above the ground.
Her line of sight is 5 feet off the ground.
The distance between the girl and the helicopter is 280 feet.
<h3>The angle of depression is the angle between a horizontal line from the observer and the line of sight to an object that is below the horizontal line.</h3>
The angle of depression is determined by the following formula;
The measure of the opposite side is = 665-5 = 660 feet
The measure of the adjacent side is = 280 feet
Substitute all the values in the following formula;
Hence, the measure of the angle of depression is 67 degrees.
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