SOLUTION: Perform the indicated operation, and enter your answer in standard form: 5*(cos(150�)+isin(150�))*4*(cos(30�)+isin(30�)) Thanks

SOLUTION: Perform the indicated operation, and enter your answer in standard form: 5(cos(150�)+isin(150�))4*(cos(30�)+isin(30�)) Thanks

Question 984816: Perform the indicated operation, and enter your answer in standard form:
5*(cos(150�)+isin(150�))*4*(cos(30�)+isin(30�))
Thanks
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!



Multiply the 5 by the 4 getting 20
Add the 150� and the 30� getting 180�



Then substitute cos(180�) = -1 and sin(180�) = 0, the above becomes



-20.

Edwin

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