At a certain time of day, the angle of elevation of the sun is 30°. A tree has a shadow that is 25 feet long. Find the height of
the tree to the nearest foot.
A)
13 ft
B)
14 ft
C)
22 ft
D)
29 ft
A)
13 ft
B)
14 ft
C)
22 ft
D)
29 ft
2 answers:
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For this case we have that by definition, the roots, or also called zeros, of the quadratic function are those values of x for which the expression is 0.
Then, we must find the roots of:
Where:
We have to:
Substituting we have:
By definition we have to:
So:
Thus, we have two roots:
Answer:
