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alexandr1967 [171]
3 years ago
5

Please help me with this !!

Mathematics
1 answer:
Sergio [31]3 years ago
3 0

Answer: AC = 7√3

tan 30° = \frac{BC}{AC}

=> \frac{BC}{AC}=\frac{1}{\sqrt{3} }\\\\\=> AC=BC\sqrt{3} =7\sqrt{3}

Step-by-step explanation:

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seropon [69]

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3 years ago
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Nina [5.8K]

Answer:

<em>5</em><em> players participated in the tournament.</em>

Step-by-step explanation:

In a small chess tournament, 20 matches were played.

Let us assume that n number of players participated in the tournament

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As 5\times 4=20, so we get n=5.

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3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

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