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Estudos Gerais05/22/2024

1-Sendo sen x = 4/5 e cos y = 12/13 com ambos no 1º quadrant...

1-Sendo sen x = 4/5 e cos y = 12/13 com ambos no 1º quadrante, determine:

a- cos x

b- Sen y

c- cos(x + y)

d- Sen (x - y)

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