Find the product $$( - 5 + 5 i ) ( 7 - 7 i )$$ using trigonometric forms.Leave the result in trigonometric form.
A) $35 \left( \cos 135 ^ { \circ } + i \sin 135 ^ { \circ } \right)$
B) $70 \left( \cos 45 ^ { \circ } + i \sin 45 ^ { \circ } \right)$
C) $35 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)$
D) $70 \left( \cos 135 ^ { \circ } + i \sin 135 ^ { \circ } \right)$
E) $70 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)$

Question

Find the product $$( - 5 + 5 i ) ( 7 - 7 i )$$ using trigonometric forms.Leave the result in trigonometric form.
A) $35 \left( \cos 135 ^ { \circ } + i \sin 135 ^ { \circ } \right)$
B)​ $70 \left( \cos 45 ^ { \circ } + i \sin 45 ^ { \circ } \right)$
C)​ $35 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)$
D)​ $70 \left( \cos 135 ^ { \circ } + i \sin 135 ^ { \circ } \right)$
E)​ $70 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)$

Quizplus · Accepted Answer

The Answer of Find the product $$( - 5 + 5 i ) ( 7 - 7 i )$$ using trigonometric forms.Leave the result in trigonometric form.
A) $35 \left( \cos 135 ^ { \circ } + i \sin 135 ^ { \circ } \right)$
B)​ $70 \left( \cos 45 ^ { \circ } + i \sin 45 ^ { \circ } \right)$
C)​ $35 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)$
D)​ $70 \left( \cos 135 ^ { \circ } + i \sin 135 ^ { \circ } \right)$
E)​ $70 \left( \cos 90 ^ { \circ } + i \sin 90 ^ { \circ } \right)$

Find the Product (−5+5i)(7−7i)( - 5 + 5 i ) ( 7 - 7 i )(−5+5i)(7−7i)

Find the Product $( - 5 + 5 i ) ( 7 - 7 i )$