Respuesta:
El lado "a" mide 17.34 cm aproximadamente
Explicación paso a paso:
a² = b² + c² - 2bc . Coseno(A)
a² = 45² + 66² - 2(45)(66) . cos 47°
a² = 2025 + 4356 - 5940 . cos 47°
a² = 6381 - 5940 . cos 47°
a² = 441 . cos 47° =
a² = 300.762
a = √300.762
a= 17.342 ≅ 17.34
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Verified answer
Respuesta:
El lado "a" mide 17.34 cm aproximadamente
Explicación paso a paso:
a² = b² + c² - 2bc . Coseno(A)
a² = 45² + 66² - 2(45)(66) . cos 47°
a² = 2025 + 4356 - 5940 . cos 47°
a² = 6381 - 5940 . cos 47°
a² = 441 . cos 47° =
a² = 300.762
a = √300.762
a= 17.342 ≅ 17.34