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goldenfox [79]
3 years ago
10

1 inch on the map represents 8 miles

Mathematics
1 answer:
vovangra [49]3 years ago
7 0

Answer:

What is the question?

Step-by-step explanation:

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Use a half-angle identity to find the exact value of sinPi/8
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Answer:

  sin(π/8) = (1/2)√(2-√2)

Step-by-step explanation:

Using the half-angle formula ...

  \sin{\dfrac{\theta}{2}}=\sqrt{\dfrac{1-\cos{\theta}}{2}}

We can let θ = π/4 and simplify the result as follows:

  \sin{\dfrac{\pi}{8}}=\sqrt{\dfrac{1-\cos{(\pi/4)}}{2}}=\sqrt{\dfrac{1-\dfrac{\sqrt{2}}{2}}{2}}=\sqrt{\dfrac{2-\sqrt{2}}{4}}\\\\=\boxed{\dfrac{1}{2}\sqrt{2-\sqrt{2}}}}

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2 years ago
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serious [3.7K]

Answer:

-7 and 21

Step-by-step explanation:

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