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Mars2501 [29]
2 years ago
7

FIRST CORRECT GETS BRAINLIEST

Mathematics
1 answer:
BARSIC [14]2 years ago
3 0

Answer:

First choice.

Step-by-step explanation:

cos 11π/6 = cos π/6 = √3/2

So cos 11π/12 =   √(1 + cos 11π/6) / √2

= √(1 + √3/2) / √2

= √(2 + √3) / 2.

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Since the person didn't write the answer choices they were:

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Answer:

<u>12.5% ≈ 13%</u>

Step-by-step explanation:

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3 years ago
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