3 years ago

How do I find answer for (5.8)(8.3)

Mathematics

2 answers:

tino4ka555 [31]3 years ago

3 0

Using multiplication, we get 5.8 x 8.3= 48.14

MrMuchimi3 years ago

3 0

Hello!

To find our answer ,we just multiply.

5.8(8.3)=48.14

I hope this helps!

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

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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 $\cos(x)$ .

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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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The actual square root of 7 is 2.64 and that is between 2.6 and 2.7.

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