er j70 a) sin(70) = 7(e+e °) b) cos(70) 2 con ej +e j0 c) cos(0 + ø) = te jø 2 (ej0 te j°) (ej®+e s*) + (e® _e_®) (cj0 e 1*) d) cos(0 + ø) = 4 ||

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A:

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