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amandacoimbra1
@amandacoimbra1
October 2020
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ME AJUDEM
15 PONTOS
Utilizando a lei dos cossenos no triangulo ABC, determine o valor de x:
A hipotenusa é x
O adjacente é 4 cm
O oposto é 3cm
e o ângulo mede 60°
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Kazuyoshi
De acordo com a leis dos cossenos:
x²=4²+3²-2*4*3*cos60
x²=16+9 -24*1/2
x²=25-12
x²=13
x=√13
2 votes
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x²=4²+3²-2*4*3*cos60
x²=16+9 -24*1/2
x²=25-12
x²=13
x=√13