Write the Complex Number in Rectangular Form $\sqrt { 7 } \operatorname { cis } 270 ^ { \circ }$

question 18

Multiple Choice

Write the complex number in rectangular form.
- $\sqrt { 7 } \operatorname { cis } 270 ^ { \circ }$

• A) \(- \mathrm { i } \sqrt { 7 }\)
• B) \(- \mathrm { i }\)
• C) \(- 7 \mathrm { i }\)
• D) \(- \sqrt { 7 }\)

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