Question

Qual o valor numérico da expressão A - B, quando : A= sen 2π+cosπ/sen0+senπ/2 e B=cos 2π+cosπ/cos0+2 cosπ. ???

Answer 1

$A= sen ( 2 * 3,14) + cos (3,14) /sen 0 + sen \frac{3,14}{2}$
$A = 0,1096 + 0,9984 / 0 + 0,0274$
$A = 1,108 / 0,0274$
$A = 40,44$

$B= cos 2 * 3,14 + cos 3,14 / cos 0 + 2 * cos 3,14 =$
$B = 0,9940 + 0,9985 / 1 + 1,997$
$B = 1,9925 / 2,997$
$B = 0,6648$

$A - B = 40,44 - 0,6648$
$A - B = 39,76$