Question

Considere a tabela e a soma a seguir: sem pi/2 + cos pi + Sen 3pi/2. O valor dessa soma e igual a ?
-2
-1
0
1

Answer 1

Senπ/2+cosπ+sen3π/2

senπ/2 = 1

cosπ = -1

sen3π/2 = -1

1+(-1)-1 = -1