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barxatty [35]
3 years ago
9

A 6-foot man walks on level ground toward a 60 foot flag pole. He notes different angles of elevation θ to the top of the pole w

hen he is different horizontal distances x away from the pole.
a) Express the man's horizontal distance from the base of the pole x (in feet) as a function of the angle of elevation θ in degrees. Type theta for θ.
b) Express the angle of elevation θ as a function of the man's horizontal distance to the base of the pole x.
Mathematics
1 answer:
krek1111 [17]3 years ago
5 0

Answer:

  a)  x = 54/tan(theta)

  b)  theta = arctan(54/x)

Step-by-step explanation:

a) The tangent ratio is the ratio of the side opposite an acute angle in a right triangle to the adjacent side. For the angle of elevation, the adjacent side is the distance x to the flagpole. The side opposite is the 54-foot difference between the top of the man's head and the top of the flagpole. So, we have ...

  tan(theta) = 54/x

Solving for x gives ...

  x = 54/tan(theta)

__

b) Solving the first equation in the previous part for theta involves the inverse tangent function:

  theta = arctan(54/x)

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