An engineer erects a 111-foot cellular telephone tower. Find the angle of elevation to the top
of the tower at a point on level ground 62 feet from its base. Round your answer to one
decimal place.
A. 62.8
B. 63.8
C. 61.8
D. 60.8
E. 64.8

Option D: angle of elevation = 60.8°

Step-by-step explanation:

To solve this problem we can use the tangent relation of the angle of elevation.

The opposite side to the angle will be the height of the tower, that is 111 feet. The adjacent side to the angle will be the distance from the point to the base of the tower, that is 62 feet.

So we have that:

tangent(angle) = 111/62

tangent(angle) = 1.7903

angle = 60.8°

Correct option: D

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

i can you with this sweetie!

step-by-step explanation: