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natulia [17]
2 years ago
6

Question is 15 points

Mathematics
1 answer:
Illusion [34]2 years ago
5 0

In every right triangle, legs are hypothenuse are linked by the following relationship: the sine of an angle is given by the ratio of the opposite leg and the hypothenuse, while the cosine of an angle is given by the ratio of the adjacent leg and the hypothenuse.

In this case, the hypothenuse is 391 units long, while the 267-units-leg is adjacent to the angle you're interested in.

For this reason, you have

\cos(A) = \cfrac{267}{391} \approx 0.68286445

To find the value of the angle, simply invert this formula:

A = \arccos(0.68286445) \approx 46.93

If we need to approximate this value to the nearest degree, we can observe that 46.93 lies between 46 and 47. So, we have to choose the closest one.

46 is 0.93 units far, while 47 is only 0.07 units far, so the answer is 47.

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triangle ABC is isosceles, angle B is vertex angle , AB = 20x -2, AC =25x, and BC =12 x +20. Find x and the length of each side
lisov135 [29]

Length of AB = 18. 92

Length of AC = 26. 15

Length of BC = 32. 552

<h3>How to determine the sides of the triangle</h3>

Using the Pythagorean theorem, we have that

(20 x-2)^2 = (12x + 20)^2 + (25x)^2

Expand the bracket

400x^2- 4 = 144x^2 + 400 + 625x^2

Collect like terms

400x^2 - 144x^2 - 625x^2 = 400 + 4

-369x^2 = 404

Make x^2 subject

x^2 = \frac{404}{369}

x = \sqrt{1.0948}

x = 1. 046

Thus,

Length of AB = 20x -2 = 20(1. 046) - 2 = 18. 92

Length of AC = 25x = 25* 1.046 = 26. 15

Length of BC = 12x + 20 = 12(1. 046) + 20 = 32. 552

Learn more about isosceles triangles here:

brainly.com/question/1475130

#SPJ1

8 0
1 year ago
A die is rolled 2 times. What is the probability of getting a 2 on the first roll and a 5 on the second roll?
lisov135 [29]

Answer:

1/36

Step-by-step explanation:

the chance of rolling a 2 on a 6-sided die is 1/6 and rolling a 5 on a 6-sided is also 1/6.

So, 1/6 * 1/6 = 1/36

Hope this is helpful

8 0
3 years ago
Read 2 more answers
Do set of numbers DO NOT form a Right Triangle?<br> O 9, 12, 15<br> 5, 12, 13<br> 3,4,5<br> O 4,5,6
NeTakaya

Answer:

The ans is 3,4,5

Step-by-step explanation:

Hope it helps you Tq

4 0
2 years ago
John bikes at a speed of 10 miles per hour
mihalych1998 [28]

Answer:

15 miles

Step-by-step explanation:

10x1.5=15

3 0
2 years ago
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(II) A baseball (m = 145 g) traveling 32 m????s moves a fielder’s glove backward 25 cm when the ball is caught. What was the ave
KengaRu [80]

Step-by-step explanation:

Below is an attachment containing the solution.

3 0
3 years ago
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