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Exercise

7(cos⁡170∘+isin⁡170∘)5(cos⁡10∘+isin⁡10∘)\frac{7\left(\cos170^{\circ}+i\sin170^{\circ}\right)}{5\left(\cos10^{\circ}+i\sin10^{\circ}\right)}

Step-by-step Solution

1

Multiply the single term 77 by each term of the polynomial (cos⁡(170)+sin⁡(170)i)\left(\cos\left(170\right)+\sin\left(170\right)i\right)

7cos⁡(170)+7sin⁡(170)i5(cos⁡(10)+sin⁡(10)i)\frac{7\cos\left(170\right)+7\sin\left(170\right)i}{5\left(\cos\left(10\right)+\sin\left(10\right)i\right)}

Final answer to the exercise

7cos⁡(170)+7sin⁡(170)i5(cos⁡(10)+sin⁡(10)i)\frac{7\cos\left(170\right)+7\sin\left(170\right)i}{5\left(\cos\left(10\right)+\sin\left(10\right)i\right)}

Try other ways to solve this exercise

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7(cos170◦+isin170◦)5(cos10◦+isin10◦) 
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