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inn [45]
3 years ago
11

If cos=3/5, then tan=

Mathematics
2 answers:
Juliette [100K]3 years ago
6 0
This is a 3-4-5 triangle.

Remember, 
SOH-CAH-TOA

S(ine) =  O(pposite)/H(ypotenuse)
C(osine) = A(djacent)/H(ypotenuse)
T(angent) = O(pposite)/A(djacent)

In Cosine, the adjacent = 3, and the Hypotenuse = 5

Hypotenuse is the longest side. 

3,4,5 is the triangle that fits inside, therefore, the Opposite is 4, and Adjacent is 3

T(angent) = O(pposite)/A(djacent)

Plug in the numbers

T = 4/3

tan = 4/3 is your answer

hope this helps
Kazeer [188]3 years ago
5 0
So cosФ = 3/5 means that ratio of length of adjacent side to length of hypotenuse side is 3:5

So then we can assume adjacent side is 3 and hypotenuse is 5.

By Pythagoras<span>' </span>Theorem, we have √(5² - 3²) = 4, so then length of opposite side would be 4.

Now tanФ is ratio of length of opposite side to length of adjacent side, which would be 4/3.

Final answer: 4/3

Hope this helps.
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Answers:

1) The dependent variable is the boiling point of water and the independent variable is the altitude.

2) The slope would represent the average decrease of the boiling point of water per every one thousand feet that the altitude increase.

Explanation:

1) given

Table:

<span>Altitude (in thousands of feet)    Boiling Point of Water (Fahrenheit)

(sea level) 0                                212
0.5                                               211.1
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2) The independent variable is the input of the function, and the dependent variable is the output of the function.

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a) the independent variable is the altitude, and
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slope = --------------------------------------------------- =  ---------------------------------
</span>                 change in the independent variable          change in altitude

Therefore, the slope represents the average change in the boiling boilin point of water every one thousand feet on change of altitude.

If the relationship is not linear, then the slope is not constant, and you will have different slopes for different parts.

If the slope is negative, means that as the altitude increase the boiling point of water decrease.

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              212 - 210           2
slope =---------------- =   ------- = - 2
                0 - 1            - 1

or, using other pair of points:

                204.8 - 210           -5.2             
slope = --------------------- =   --------- = -2.6
                  4.0 - 2.0               2.0

As you see, the slope is not constant. So, the function is not linear.
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