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Hitman42 [59]
3 years ago
5

Can someone please help me on this question and show the work if you can?

Mathematics
1 answer:
Studentka2010 [4]3 years ago
6 0

Answer:

it is a 60 30 90 triangle so basically 2y is = x

21² + y² = x²

441 + y² = x²

y = x/2 (2y = x)

441 + x²/4 = x²

4x² = 1764 + x²

3x² = 1764

x = exact is 24.248711306 simplied square root would just be 14√3

2y = 14√3

y = 7√3

exact wouldd be 12.124355653

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Answer:

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Step-by-step explanation:

Getting the point!

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  3. We know that all radians with the base of 4 on the unit circle have the points of (\frac{\sqrt{2}}{2} ,\frac{\sqrt{2}}{2})
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Finding the sin!

  1. Because we know that sin is asking us for the y value
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