In the equation s = [2a cos ω_b t] cos ω_a t, what does the term 2a cos ω_b t represent? - OSCILLATIONS AND WAVES Quiz | GKFix.in

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In the equation s = [2a cos ω_b t] cos ω_a t, what does the term 2a cos ω_b t represent?

A. Phase constant
B. Angular frequency
C. Wave speed
D. Time-varying amplitude

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