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Step 1:

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The complex numbers $\"\"$ .

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Write the complex number in polar form.

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Substitute $\"\"$ and $\"\"$ in the polar form.

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$\"\"$

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The argument is $\"\"$ .

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$\"\"$ \ \

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Hence, the polar form of complex numbers is $\"\"$

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(a)

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$\"\"$ Find $\"\"$ .

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Euler $\"\"$ s formula: $\"\"$ .

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Substitute $\"\"$

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$\"\"$

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Since, $\"\"$ \ \

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(b)

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$\"\"$ Find $\"\"$ .

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Euler $\"\"$ s formula: $\"\"$ .

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Substitute $\"\"$

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$\"\"$

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Since, $\"\"$ \ \

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Solution:

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$\"\"$

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$\"\"$

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