Mathematics: i know it s probably simple, but i don t

i know it s probably simple, but i don t

Ответ:

maggie123433

12.01.2022

For the reciprocal, you swap numerator and denominator.

a. The reciprocal of $\frac{\sqrt{2}}{2}$ is $\frac{2}{\sqrt{2}}$
To rationalize the irrational denominator, multiply numerator and denominator by the radical, then simplify.
$=\frac{2 \times \sqrt{2}}{\sqrt{2} \times \sqrt{2}} = \frac{2 \sqrt{2}}{2} = \sqrt{2}$

b. $\frac{-2}{\sqrt{3}} = \frac{-2 \sqrt{3}}{3}$

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Ответ:

tatipop49

05.06.2020

Mathematics

C

u can use a calculator: 7sin (51)

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i know it's probably simple, but i don't

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