What is the product of $3.61 ({cos 56.3}^{\circ} + i {sin 56.3}^{\circ})$ $3.61(\cos 56.3^\circ + i \sin 56.3^\circ)$ ?

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Answer 1 · 2018-06-14T04:42:43

$\Rightarrow 2 + i 3$ $color(blue)(=> 2 + i 3$

$3.61 \cdot ({cos 56.3}^{\circ} + i {sin 56.3}^{\circ})$ $3.61* (cos 56.3^@+ i sin 56.3^@)$

$\Rightarrow 3.61 \cdot cos 56.3 + i 3.61 \cdot sin 56.3$ $=> 3.61 * cos 56.3 + i 3.61* sin 56.3$

$\Rightarrow 2 + i 3$ $color(blue)(=> 2 + i 3$

What is the product of 3.61(cos56.3∘+isin56.3∘)3.61(\cos 56.3^\circ + i \sin 56.3^\circ)?