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PilotLPTM [1.2K]
3 years ago
10

A bird is sitting on top of a ten foot pole looking at a piece of bread that is 30 feet from the base of the pole. What is the a

ngle of depression from the bird to the piece of bread.

Mathematics
1 answer:
maksim [4K]3 years ago
6 0

Answer: The angle of depression is 18.3 degrees

Step-by-step explanation:

The scenario is illustrated in the attached photo

A right angle triangle ABC is formed. The angle of depression, theta forms an alternate angle of # on the ground. To determine the angle, #, we would apply trigonometric ratio

Tan# = opposite side / adjacent side

Opposite side = BC = 10 feets

Adjacent side = AB = 30 feets

Tan # = 10/30 = 0.33

# = tan^-1(0.33)

# = 18.2629

Approximately 18.3 degrees

Since # is alternate to the angle of depression, it means that they are equal. So

The angle of depression is 18.3 degrees

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a very fast way to do it:

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8 0
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Which expressions are equivalent to when x0? Check all that apply.
Genrish500 [490]
We have that

\frac{(x+4)}{3} / \frac{6}{x} = \frac{x*(x+4)}{3*6} \\ \\ = \frac{( x^{2} +4x)}{18}

therefore

case a) 
\frac{(x+4)}{3} * \frac{x}{6}
Is equivalent

case b) 
\frac{6}{x} * \frac{(x+4)}{3}
Is not equivalent

case c) 
\frac{x}{6} * \frac{(x+4)}{3}
Is  equivalent

case d) 
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case e) 
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Is equivalent

Hence

the answer is

\frac{(x+4)}{3} * \frac{x}{6}

\frac{x}{6} * \frac{(x+4)}{3}

\frac{(2 x^{2} +4x)}{18}
3 0
3 years ago
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Which of the following values would complete the ordered pair if the point is on the graph of f (x) = -3x + 2 ?
Scrat [10]

Answer: the y-coordinate that completes the point is 5.


Explanation:


An ordered pair (x, y) indicates the x-and-y coordinates of a general point, where x is the input value of a function and y is the output value.


The output value is y = f(x) and must be found applying the rule (function) to the given input value.


In this case the rulte is f(x) = - 3x + 2, and the input value, x,  is - 1 (the first value of the ordered pair).


This is the mathematical procedure:

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What is the solution(s) to the equation 5a2 - 44 = 81?
taurus [48]

Answer:

B

Step-by-step explanation:

5a^2 - 44 = 81                     Add 44 to both sides

5a^2 = 81 + 44                    Collect like terms

5a^2 = 125                          Divide both sides by 5

a^2 = 125/5                  

a^2 = 25                              Take the square root of both sides

√a^2 = √25

a = +5

a = -5

The answer is B

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3 years ago
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