Question

Indique o sinal das expressões
A- (sen60° + sen135°) × (sen225° × sen285°)

B) 2.sen π/4 . sen 3π/4
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-2

C) (Sen10°+ sen 80°) × (Sen 190°)
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-3. sen 325°​

Answer 1

Espero que os anexos ajudem a compreender.