9514 1404 393
Answer:
Step-by-step explanation:
The side given is opposite the given angle. We want to find both the hypotenuse and the adjacent side in the right triangle that models the geometry.
Sin = Opposite/Hypotenuse
sin(50°) = (230 ft)/h
h = (230 ft)/sin(50°) ≈ 300.24 ft
The length of the cable must be about 300.2 feet.
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Tan = Opposite/Adjacent
tan(50°) = (230 ft)/d
d = (230 ft)/tan(50°) ≈ 192.99 ft
The cable must be anchored about 193.0 ft from the tower.
Given:
The function is:
To find:
The all the real and non-real roots of the given function.
Solution:
We have,
For roots, ,
Taking square root on both sides, we get
The roots of the given function are -7i and 7i.
Therefore, the correct option is B.