The r.m.s. value for the given wave is given by

rms value of the complete waveform

=	1	√(rms value of the Ist waveform)² + (rms value of the second waveform)²
	√2

=	1	√		√V_m		²	+		√V_m		²
	√2			√2					√2

=	1	√		√2		²	+		√2		²
	√2			√2					3√2

=	1	√1 + ⅑
	√2

= √10/18

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