A lamp in the shape of a triangular pyramid has a height of 17 inches. The area of the base of the lamp is 90 square inches.
1 answer:
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Given:
In triangle ABC, .
To find:
The angle of depression from point A to point C.
Solution:
According to angle sum property, the sum of all interior angles of a triangle is 180 degrees.
In triangle ABC,
We know that if a transversal line intersect the two parallel lines, then alternate interior angles are equal. So, the angle of depression from point A to point C is equal to the measure of angle C in triangle ABC.
Therefore, the angle of depression is 24 degrees.