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Alja [10]
3 years ago
15

What does BD equal to?​

Mathematics
1 answer:
kupik [55]3 years ago
3 0

Answer:

Step-by-step explanation:

tan\theta =16/20\\ \\ \theta=arctan(4/5)\\ \\ tan(90-\theta )=BD/20\\ \\ BD=20tan(90-\theta )\\ \\ BD=20tan(90-arctan(4/5))\\ \\ BD=20

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