Convert a Complex Number from Polar to Rectangular Form
- $5 \left( \cos 139 ^ { \circ } + \mathrm { i } \sin 139 ^ { \circ } \right)$

question 55

Multiple Choice

Convert a Complex Number from Polar to Rectangular Form
- $5 \left( \cos 139 ^ { \circ } + \mathrm { i } \sin 139 ^ { \circ } \right)$

• A) \(- 3.8 + 3.3 \mathrm { i }\)
• B) \(3.3 - 3.8 \mathrm { i }\)
• C) \(- 1.7 + 1.5 \mathrm { i }\)
• D) \(1.7 - 1.5 \mathrm { i }\)

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A value calculated from sample data used to decide whether to reject the null hypothesis in statistical hypothesis testing.

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The mean expenditure incurred per month over a specified period, often used for budgeting and planning purposes.

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Provision of care and supervision to children, typically by someone other than the child's parents, often involving educational and recreational activities.