In a circuit, voltage and current are given by $V = 10 \sin(\omega t + 30^\circ)$ and $i = 10 \sin(\omega t - 30^\circ)$. The power consumed in the circuit is ____.
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Be careful with the phase! Always subtract the smaller angle from the larger one or follow the order $(V_{\text{angle}} - I_{\text{angle}})$. Here, $+30^\circ$ and $-30^\circ$ are $60^\circ$ apart on a phasor diagram.