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Rina8888 [55]
2 years ago
8

Please help me I’m struggling

Mathematics
1 answer:
ryzh [129]2 years ago
4 0

Answer:

Step-by-step explanation:

Remark

This is a cosine law problem.

a = 12

b = 15

C = 83

Notice that the angle is enclosed by 2 given sides. That's what a cosine problem looks like (one of the two choices.

Formula

c^2 = a^2 + b^2 - 2ab*cos(C)

Solution

c^2 = 12^2 + 15^2 - 2*12*15 * cos(83)

c^2 = 144 + 225 - 360 * cos(83)

cos(83) = 0.1219

c^2 = 144 + 225 - 360 * 0.1219

c^2 = 369 - 43.884

c^2 = 325.116

sqrt(c^2) = sqrt(325.116)

c = 18.031

To the nearest tenth, the answer is 18.0 and you must include the 0.

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3 years ago
What is the area of a right triangle with a hypotenuse of 12 and 1 leg is 10??
Agata [3.3K]
Hey there! :)

Area of triangles → (base × height) ÷ 2

The base and height are the 2 legs. You have to find the length of the other leg to find the area, using the Pythagorean Theorem.

a² + b² = c² → c² - a² = b²

c = 12
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a = 10
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144 - 100 = 44

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_____________________________________________________________

Area of triangles → (base × height) ÷ 2

Base: 10
Height: 6.6

6.6 × 10 = 66

66 ÷ 2 = 33

The area is 33 

Hope this helps :)


5 0
3 years ago
If x = false and y = false, is the statement: not x or not y<br> a) true<br> b) false
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Answer:

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Step-by-step explanation:

X is equal to Y

therefore,

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