Mathematics: Janet weights 20 pounds more than anna if the sum of their weights is 250 lb how much does each girl weigh

In polar coordinates, we haveFrom this we can writeIf , then , so we get...

Janet weights 20 pounds more than anna if the sum

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xxkeyxx51

31.05.2020

Mathematics

The answer is 145

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camilacarrielh15

08.06.2021

Mathematics

In polar coordinates, we have

$x=r\cos\theta\implies\cos\theta=\dfrac xr$
$y=r\sin\theta\implies\sin\theta=\dfrac yr$

From this we can write

$\tan\theta=\dfrac{\sin\theta}{\cos\theta}=\dfrac{\frac yr}{\frac xr}=\dfrac yx$

If $\theta=\dfrac{4\pi}3$ , then $\tan\theta=\sqrt$ , so we get

$\dfrac yx=\sqrt3\implies y=\sqrt3\,x$

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Janet weights 20 pounds more than anna if the sum of their weights is 250 lb how much does each girl weigh

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