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lozanna [386]
3 years ago
5

The circumference of a circle is 4π ft. find its diameter in feet

Mathematics
1 answer:
Ainat [17]3 years ago
3 0

Answer:

4 is the diameter

Step-by-step explanation:

Given:

C = 4π

Formula for circumference:

C = 2πr

Work:

C = 2πr

4π = 2πr

r = (4π)/(2π)

r = 2

Diameter:

d = 2r

d = 2(2)

d = 4

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Answer:

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9. cos(X) = 1/2 = 0.5

cos(Y) = (√3)/2 ≈ 0.8660

Step-by-step explanation:

The trigonometric ratio for cosine is given as follows;

Cos(\theta) = \dfrac{Adjacent\, side \, to\,  angle}{Hypothenus\, side \, length \ of\, the \  triangle}

7. The adjacent leg length to ∠X = 27

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The adjacent leg length to ∠Y = 36

∴ cos(Y) = 36/45 = 4/5 = 0.8

cos(Y) = 4/5 = 0.8

8. The adjacent leg length to ∠X = 15

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The adjacent leg length to ∠Y = 8

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9. The adjacent leg length to ∠X = 13

The length of the hypotenuse side of the triangle = 26

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Cos(X) = 1/2 = 0.5

The adjacent leg length to ∠Y = 13·√3

∴ cos(Y) = 13·√3/26 = (√3)/2 ≈ 0.8660

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The mass of Venus is
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Step-by-step explanation:

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8 0
2 years ago
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Novay_Z [31]

Answer:

Step-by-step explanation:

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Answer:

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