An AM signal has the form u(1) = [ 25+2 cos1000 r t + 10 cos750 br1|]cos 2r f,t where fe = 10° Hz. 1. Sketch the (voltage) spectrum of u(1). 2. Determine the power in each of the frequency components. 3. Determine the modulation index. 4. Determine the power in the sidebands, the total power, and the ratio of the sidebands power to the total power.

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.