Sendo × a medida em graus de um arcotrigonométrico,
Sendo × a medida em graus de um arco
trigonométrico, com 0 < × < 360, tal que sen x + COS X =
1,4.
Assim, tem-se que sen x
cos × é necessariamente
igual a
a-)0,42
b-)0,46
c-)0,40
d-)0,44
e-)0,48
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