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Izabellly
@Izabellly
May 2020
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Obtenha os valores possíveis de m, de modo que sen a= m+1 e cos a=m, com a ∈ IQ. ?
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Tiririca
Sen ² a + cos² a = 1 (relação fundamental)
(m+1)² + m² = 1
2m² + 2m = 0
m² + m = 0
m(m+1) = 0
m = 0
m+1 = 0 ==> m = -1
resp : m = 0 ou m = -1
2 votes
Thanks 1
izabellly
obgg, da uma olhadinha nessa pf http://brainly.com.br/tarefa/510667
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(m+1)² + m² = 1
2m² + 2m = 0
m² + m = 0
m(m+1) = 0
m = 0
m+1 = 0 ==> m = -1
resp : m = 0 ou m = -1