Question: Two waveforms are represented by the following equations: i 1 = 1 0 c o s ( t ) - 7 c o s (

Two waveforms are represented by the following equations:
i1=10cos(t)-7cos(3t)-3sin(5t)
i2=10sin(t)+3cos(3t)+7cos(5t)
How do their RMS values compare?
A. RMS values of i1(t) and i2(t) are nonzero and equal.
B. RMS value of i1(t) is larger than that of i2(t).
C. RMS value of i1(t) is smaller than that of i2(t).
D. RMS values of i1(t) and i2(t) are each zero.
Two waveforms are represented by the following

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