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crimeas [40]
3 years ago
7

Select three ratios that are equivalent to 8:20 Choose 3 answers: (A. 1:4

Mathematics
1 answer:
denpristay [2]3 years ago
8 0

Answer:

8:20

divide by 2

B. 4:10

multiply by 3

C. 24: 60

divide by 4

D. 2:5

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The vertices of a rectangle in the standard (x,y) coordinate place are (0,0), (0,4), (7,0) and (7,4). If a line through (2,2) pa
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Answer:

The answer is A

Step-by-step explanation:

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4*7=28

28 unit square.

The point of (2,2) is on the middle height of rectangular shape. The point has 2 unit distance to base and ceiling of the rectangular.

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4 years ago
The point (-3/5,y)in the third quadrant corresponds to angle θ on the unit circle.
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The given point (-3/5 , y) lies in the third quadrant.
It is also given that the point lies on a unit circle.

For a point (x,y) lying on a unit circle a and y are defined as:

x = cos θ
y = sin θ

So, we can say for the point (-3/5 , y) the value -3/5 is equal to cos θ

sec θ is the reciprocal of cos θ.

So, sec θ = -5/3

cot\theta= \frac{cos\theta}{sin\theta}

Using Pythagorean identity we can first find sin θ.

sin \theta = - \sqrt{1- cos^{2}\theta }  \\  \\ 
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Since the point lies in 3rd quadrant, both sin and cos will be negative.

So, now we can write:

cot\theta= \frac{ \frac{-3}{5} }{ \frac{-4}{5} } \\  \\ 
cot\theta= \frac{3}{4}

Answers:
sec θ = -5/3
cot θ = 3/4
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