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Alex17521 [72]
2 years ago
12

An observer at the top of a tower of height 20m sees a man due East of him at an angle of depression of 27°. He sees another man

due south of him at an angle of depression 30°. Find the distance between the men on the ground.
hint: question is from trigonometry. bearings.
Mathematics
1 answer:
kotegsom [21]2 years ago
8 0

Answer:

  • 52.35 m

Step-by-step explanation:

<em>Refer to picture.</em>

Let the distance to men are x and y and the distance between them is d.

The angle of depreciation is 27° and 30°, hence top angle of the triangle is 63° or 60°.

<u>Find the distance from the tower to men:</u>

  • x = 20 tan 63° = 39.25 m
  • y = 20 tan 60° = 34.64 m

<u>The distance between men is:</u>

  • d = \sqrt{x^2+y^2} =\sqrt{39.25^2+34.64^2} = 52.35m

<em>Note, all numbers are rounded</em>

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My co-worker Larry only likes numbers that are divisible by 4, such as 20, or 4,004. How many different ones digits are possible
gavmur [86]

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<h3>There must be infinitely numbers different ones digits are possible in numbers that Larry likes.</h3>

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<h3>To find that how many different ones digits are possible in numbers that Larry likes:</h3>

From the given "Larry only likes numbers that are divisible by 4."

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3 years ago
What is the y-value of the solution to the system of equations {3x+4y=42x−4y=6?
timofeeve [1]

The value of y for the system of equation is -1/2 .

<h3>What is a System of Equation ?</h3>

A system of equation is a set of equation that have common solution

The set of equation given is

3x+4y=4

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To solve the system , Elimination method will be used

Add equation 1 and 2 to eliminate y

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Therefore the value of y for the system of equation is -1/2 .

To know more about System of Equation

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