3 years ago

Which of the following equations could be used to solve for x in the triangle shown?

Mathematics

1 answer:

Bond [772]3 years ago

3 0

Well, if you look into it, inspect element thsi, really. I believe it is either A, Or C. But I am more strong with A.

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Sergio039 [100]

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3 years ago

$i^5+i^{-25}+i^{45}$<img src="https://tex.z-dn.net/?f=%24i%5E5%2Bi%5E%7B-25%7D%2Bi%5E%7B45%7D%24" id="TexFormula1" title="$i^5+i

gregori [183]

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Rewrite the term $i^{-25}$

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Expand each term so we have

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Use the fact that $i^2=-1$

$=i(-1)^2+\dfrac{1}{i(-1)^{12}}+i(-1)^{22}$

Use the fact that $(-1)^{a}=1$ when a is an even number

$=i+\dfrac{1}{i}+i$

Simplify

$=i-i+i$

$=i$

Let me know if you need any clarifications, thanks!

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