Question

Simplifique a expressao y=sen 3 pi sobre 2 + 2 cos pi? sobre 3 sen pi sobre 2

Answer 1

E = sen(3π/2) + 2cos(π/3) * sen(π/2)

passo a passo

sen(3π/2) = -1

cos(π/3) = 1/2

sen(π/2) = 1

E = -1 + 2*1/2*1 = -1 + 1 = 0