2 years ago

The formula for the circumference of a circle is C = 2nr. Find the circumference of a

Mathematics

1 answer:

Sholpan [36]2 years ago

7 0

Step-by-step explanation:

$circumference = 2\pi \: r \\ C = 2 \times 3.14 \times ( \frac{4}{2} ) \\ C = 12.56 \: ft$

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Fill in Sin, Cos, and tan ratio for angle x. <br> Sin X = 4/5 (28/35 simplified)

Fantom [35]

Answer:

Given: $\sin(x) = (4/5)$ .

Assuming that $0 < x < 90^{\circ}$ , $\cos(x) = (3/5)$ while $\tan(x) = (4/3)$ .

Step-by-step explanation:

By the Pythagorean identity $\sin^{2}(x) + \cos^{2}(x) = 1$ .

Assuming that $0 < x < 90^{\circ}$ , $0 < \cos(x) < 1$ .

Rearrange the Pythagorean identity to find an expression for $\cos(x)$ .

$\cos^{2}(x) = 1 - \sin^{2}(x)$ .

Given that $0 < \cos(x) < 1$ :

$\begin{aligned} &\cos(x) \\ &= \sqrt{1 - \sin^{2}(x)} \\ &= \sqrt{1 - \left(\frac{4}{5}\right)^{2}} \\ &= \sqrt{1 - \frac{16}{25}} \\ &= \frac{3}{5}\end{aligned}$ .

Hence, $\tan(x)$ would be:

$\begin{aligned}& \tan(x) \\ &= \frac{\sin(x)}{\cos(x)} \\ &= \frac{(4/5)}{(3/5)} \\ &= \frac{4}{3}\end{aligned}$ .

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2 years ago

I need help with this question.

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Answer:

5c-5=45

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Since he didn't have the dessert you have to take away the five and the total was 45 which means something has to equal it.

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In a computer program, distance due south from a point is treated as negative, and distance due north from a point is treated as

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The correct answer is -78.15 m.

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