Mathematics, 17.09.2019 01:50 jflakes406

Do alto de um farol cuja altura é de 20 m avista se um navio sob ângulo de depressão de 30°. a que distância , aproximadamente, o navio se acha do farol ?

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Do alto de um farol cuja altura é de 20 m avista se um navio sob ângulo de depressão de 30°. a que d...