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Find the instantaneous value at 90⁰ point of the sine wave if the wave is shifted by 45⁰.(a) 5.66(b) 6.66(c) 7.66(d) 8.66The question was asked during an internship interview.My question is from Voltage and Current Values of a Sine Wave topic in section Introduction to Alternating Currents and Voltages of Network Theory

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The CORRECT answer is (a) 5.66

The best I can explain: The EQUATION for sine WAVE A is v(t) = 10sinωt. The equation for sine wave A is v(t) = 8SIN(ωt-π/4). ωt= π/2. v (t) = 8sin(π/2-π/4) = 8sin45⁰=8(0.707) = 5.66V.



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