Represent the Complex Number Graphically,and Find the Trigonometric Form of the Number

question 99

Multiple Choice

Represent the complex number graphically,and find the trigonometric form of the number. ​
5 + 5i
​

• A)​ \[z = \sqrt { 5 } \left( \cos \frac { \pi } { 4 } + i \sin \frac { \pi } { 4 } \right)\]
• B)​ ​ \[z = \sqrt { 50 } \left( \cos \frac { \pi } { 4 } - i \sin \frac { \pi } { 4 } \right)\]
• C)​ \[z = \sqrt { 50 } \left( \cos \frac { \pi } { 4 } + \sin \frac { \pi } { 4 } \right)\]
• D)​ \[z = \sqrt { 5 } \left( \cos \frac { \pi } { 4 } - i \sin \frac { \pi } { 4 } \right)\]
• E)​ \[z = \sqrt { 50 } \left( \cos \frac { \pi } { 4 } + i \sin \frac { \pi } { 4 } \right)\]

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