3 years ago

What is the expanded form of this number? 509.307

1 answer:

ioda3 years ago

8 0

92828383939.949494949

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The last set (choice D) is a subset of given set B.

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notka56 [123]

Answer:

OPTION B: $\frac{-2\sqrt{5}}{5}$

Step-by-step explanation:

Given $cot \theta = -\frac{\sqrt{5}}{2}$

We know that, $\frac{1}{cot \theta} = tan \theta$

$\implies tan \theta = \frac{1}{-\frac{\sqrt{5}}{2}}$

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Multiplying and dividing by $\sqrt{5}$ , we get:

$tan \theta = - \frac{2 \sqrt{5}}{\sqrt{5}\times \sqrt{5}}}$

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Hence, OPTION B is the answer.

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