# The formula E = IZ, where E represents voltage, I represents current, and Z represents impedance is used in electrcal engineering

The formula E = IZ, where E represents voltage, I represents current, and Z represents impedance (a measure of opposition to a sinusoidal electric current), is used in electrcal engineering. Each variable is a complex number. Use the formula to find the missing quantity for the given conditions. Then convert the given conditions to trigonometric form and check your result.

$$I=10+2i, E=4+5i$$

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escumantsu
$$\displaystyle{\frac{{{25}}}{{{52}}}}+{\frac{{{21}}}{{{52}}}}{i}$$