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fiasKO [112]
3 years ago
8

Find the value. Please

Mathematics
1 answer:
IgorC [24]3 years ago
7 0
The cosine ratio is adjacent leg divided by the hypotenuse.
The hypotenuse in a right triangle is the longest side and it is opposite the right angle.
An adjacent leg is the side that has an endpoint that is at the vertex of the angle and the other endpoint is at the vertex of the right angle.

cos A = \frac{12}{20} =  \frac{3*4}{5*4} = \frac{3}{5}
ANSWER: cosA= \frac{3}{5}


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Two friends Ana and Juan are buying books by joining the History Book
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Answer:

Ana  spent $17  per book on average.

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Step-by-step explanation:

Ana has to pay a yearly fee of $15 to join.

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Juan  spent $14.78  per book on average.

The function can be established if y gives the total cost and x gives the number of books

y = $15 + 17x--------- equation 1

y= $10 + 14.78 x------------- equation 2

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b-2

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