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Dimas [21]
2 years ago
8

Don't know this please help

Mathematics
1 answer:
nikitadnepr [17]2 years ago
6 0
I would say answer number 2
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An angle of measure 120 degrees intersects the unit circle at point (-1/2,√3/2) What is the exact value of cos(120)
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The exact value of cos120 if the measure 120 degrees intersects the unit circle at point (-1/2,√3/2) is 0.5

<h3>Solving trigonometry identity</h3>

If an angle of measure 120 degrees intersects the unit circle at point (-1/2,√3/2), the measure of cos(120) can be expressed as;

Cos120 = cos(90 + 30)

Using the cosine rule of addition

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cos(90 + 30) = 0 - 0.5

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Hence the exact value of cos120 if the measure 120 degrees intersects the unit circle at point (-1/2,√3/2) is 0.5

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1 year ago
5.7 as an improper fraction
harkovskaia [24]

Answer:

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