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ivolga24 [154]
3 years ago
5

Find the measure of the missing angle.

Mathematics
1 answer:
Darina [25.2K]3 years ago
5 0

Answer:

The answer is

<h2>49.5°</h2>

Step-by-step explanation:

Let the angle be x

Since the triangle is a right angled triangle we can use trigonometric ratios to find the value of x

To find the value of x we use cosine

\cos( \theta)  =  \frac{adjacent}{hypotenuse}

From the question

the adjacent is 13

the hypotenuse is 20

The angle is

\cos(x)  =  \frac{13}{20}  \\ x =  \cos^{ - 1} ( \frac{13}{20} )  \\ x = 49.4583

We have the final answer as

<h3>49.5°</h3>

Hope this helps you

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Hii

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What is 9/10 divided by 3/4?
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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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5 0
2 years ago
The paint mixer wants to mix paint that is 30% gloss with paint that is 15% gloss to make 3.75 gallons of paint that is 20% glos
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The paint mixer should mix 1.238 gallon paint that is 30 % gloss and 2.512 gallon paint that is 15 % gloss to get 3.75 gallon of paint that is 20 % gloss.

In this question we must determine the correct volumes of each paint to obtain a 20 % gloss with paint by means of weighted averages:

c_{r} = x\cdot c_{a} +(1-x)\cdot c_{b} (1)

Where:

  • x - Proportion of the paint that is 30 % gloss.
  • c_{a} - Concentration ratio of the paint that is 30 % gloss.
  • c_{b} - Concentration ratio of the paint that is 15 % gloss.
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If we know that c_{a} = 0.3, c_{b} = 0.15 and c_{r} = 0.2, then the proportion of the paint that is 30 % gloss is:

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And the quantity of gallons needed of each paint are:

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Paint (15 % gloss)

V_{b} = V-V_{a}

V_{b} = 3.75\,gal-1.238\,gal

V_{b} = 2..512\,gal

The paint mixer should mix 1.238 gallon paint that is 30 % gloss and 2.512 gallon paint that is 15 % gloss to get 3.75 gallon of paint that is 20 % gloss.

To learn more on weighted averages, we kindly invite to check this question: brainly.com/question/18554478

8 0
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