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Dúvida de funções trigonométricas
Olá, estava fazendo exercícios e gostaria de saber o por que no exercício : Os valores que m pode assumir, para que exista o arco x satisfazendo a igualdade sen x= m-4 são…, O Seno fica entre -1 e 1 no começo da conta e no exercício: Determine m, de modo que se verifique sen x= 3m-1/2, O Seno está entre 0 e 1 no início ?
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