In rectangular form, 6(cos120°, isin120°)

Mathematics

1 answer:

anastassius [24]2 years ago

7 0

Answer:

(-3, 3√3)

Step-by-step explanation:

Evaluate each of the coordinates. Keep or drop the "i" as your convention requires.

6(cos(120°), i·sin(120°)) = (6·cos(120°), i·6·sin(120°)) = (6(-0.5), i·6·√3/2)

= (-3, 3√3 i)

You may want the (x, y) coordinates written as (-3, 3√3).

___

In the complex plane, this is -3+i·3√3.

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chubhunter [2.5K]

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Explanations:
The simplest way is to take 20% of the 2.5 inches and go that much above & below 2.5 inches.

2.5 x 20% = 2.5 x 0.20 = 0.5

So 2.5 - 0.5 = 2 inches was predicted
And 2.5 + 0.5 = 3 inches was predicted.

The more complicated way is to see number + 20% of that number = 2.5, and what number - 20% = 2.5.

Which solution sounds more like what you’re doing in class right now?

If it’s the more complicated way:

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1.2x = 2.5 (120% of the predicted rain value equals 2.5)
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Sorry, this is probably confusing. Let me know what questions you have.

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2 years ago

M is the midpoint of C(1,7) and D(-8,-3). Find the coordinates of M.

Alex73 [517]

Answer:

hello I hope the image helps