Special Results involving Exponential Forms Q3

Special Results involving Exponential Forms Q3

Show that \({{e}^{\mathrm{i}\theta }}+1=\left( 2\cos \frac{\theta }{2} \right){{e}^{\mathrm{i}\frac{\theta }{2}}}\).

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Answer:\( e^{i\theta} + 1 = \left(2\cos\frac{\theta}{2}\right)e^{i\frac{\theta}{2}} \) (shown)\)

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