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Elis [28]
3 years ago
8

* This is the correct answer, I have taken the test and am posting the answers in hopes of helping other people :] *

Mathematics
1 answer:
Alex3 years ago
5 0

Answer:

thank you so much!!!!!!!!!

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Rectangle WXYZ was dilated using the rule D, z 12/5
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A source of laser light sends rays AB and AC toward two opposite walls of a hall. The light rays strike the walls at points B an
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Answer: 70  meters.

Step-by-step explanation:

Observe the figure attached.

The distance between the walls is:

DE=AD+AE

<em />

Both triangles are right triangles. Therefore, you can calculate the distance  between the walls as following:

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cos\alpha=\frac{adjacent}{hypotenuse}\\\\cos(60\°)=\frac{AD}{60}\\AD=30m

- Calculate the distance AE:

tan\beta =\frac{opposite}{adjacent}\\\\tan(45\°)=\frac{40}{AE}\\\\AE=\frac{40}{tan(45\°)}\\\\AE=40m

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DE=30m+40m=70m

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