Выполни задание

Запиши в тригонометрической форме комплексные числа:

1. \(-4\) ;

2. \(9i\) ;

3. \(2\sqrt{2}+2\sqrt{2}i\) ;

4. \(\dfrac{1+5i}{1-i}\) .

Ответ:

1. [ ] \(\cdot\,(\cos (\) [ ] \()+i\cdot \sin(\) [ ] \())\) ;

2. [ ] \(\cdot\,(\cos (\) [ ] \()+i\cdot \sin(\) [ ] \())\) ;

3. [ ] \(\cdot\,(\cos (\) [ ] \()+i\cdot \sin(\) [ ] \())\) ;

4. [ ] \(\cdot\,(\cos (\) [ ] \()+i\cdot \sin(\) [ ] \())\) .