Find the product of 2(cos10degrees+isin10degrees) * 4(cos20degees+isin20degrees). Then express the result in rectangular form.
2(cos10degrees+isin10degrees) * 4(cos20degees+isin20degrees)
= 8(cos(10 + 20) + isin(10 + 20))
= 8(cos30 + isin30)
= 8(√3/2 + i/2)
= 4√3 + 4i
Copyright © 2024 Q2A.ES - All rights reserved.
Answers & Comments
Verified answer
2(cos10degrees+isin10degrees) * 4(cos20degees+isin20degrees)
= 8(cos(10 + 20) + isin(10 + 20))
= 8(cos30 + isin30)
= 8(√3/2 + i/2)
= 4√3 + 4i