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please help with these two questions.

PROBLEM 1.5 Simplify the following and give the answer in polar form. Make a plot of all the vectors involved in the complex addition PROBLEM 1.6 The waveform in the following figure can be expressed as From the waveform, determine A, uo, fo, td, and φ. Choose the value of φ such that-r < φ π. Sinusoidal Signal: x(t) = A cos(m t + φ) 100 50 50 -100 -2 6 t (time in millisec)

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2 2A .3 손 e0 ナ 2D6 &n 200

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