What is sin 28°? plzzz help

Mathematics

1 answer:

vfiekz [6]3 years ago

7 0

Answer:

Step-by-step explanation:

Sin(28) is approximately 0.4695

After rewriting all of the options as a decimal:

a) 0.8823

b) 1.875

c) 0.4706

d) 0.5333

when rounding the sin(28) to the nearest hundredth... you get 0.47

Therefore, sin(28) is c) $\frac{8}{17}$

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A conservative estimate of the number of stars in the universe is 6 x 10^22. The average human can see about 3,000 stars at nigh

Ilia_Sergeevich [38]

$2 \times 10^{19}$ times more stars are there in universe compared to human eye can see

<h3><u>Solution:</u></h3>

Given that, conservative estimate of the number of stars in the universe is $6 \times 10^{22}$

The average human can see about 3,000 stars at night with only their eyes

To find: Number of times more stars are there in the universe, compared to the stars a human can see

Let "x" be the number of times more stars are there in the universe, compared to the stars a human can see

Then from given statement,

$\text{Stars in universe} = x \times \text{ number of stars human can see}$

<em><u>Substituting given values we get,</u></em>

$6 \times 10^{22} = x \times 3000\\\\x = \frac{6 \times 10^{22}}{3000}\\\\x = \frac{6 \times 10^{22}}{3 \times 10^3}\\\\x = 2 \times 10^{22-3}\\\\x = 2 \times 10^{19}$