hamilclips1748
21.12.2020 •
Mathematics
Find a · b, given a = 12(cos pi/3 + i sin(pi/3)), b = 3 (cos(pi/4)+ i sin(pi/4))
Show 3 decimal places.
Please and thank you!!!
Solved
Show answers
More tips
- C Computers and Internet War of Social Media: Which Platform is the Leader?...
- H Health and Medicine How to Treat the Flu: A Comprehensive Guide...
- O Other What is a Disk Emulsifier and How Does it Work?...
- H Health and Medicine How to Calm Your Nerves? Expert Tips That Actually Work...
- A Animals and plants 5 Tips for Taking Care of Yews to Keep Them Green and Beautiful...
- S Sport How to wrap boxing hand wraps? Everything you need to know!...
- F Food and Cooking 10 Reasons Why You Should Avoid Giving Re-Gifts: An Informative Guide...
- F Family and Home Tender Care for Your Parquet: Is it Possible to Clean Parquet?...
- S Style and Beauty How Are Eyelash Extensions Applied? All Your Questions Answered...
- F Food and Cooking 10 Tips for Proper Sushi Consumption...
Answers on questions: Mathematics
- M Mathematics Write 3/4 as a sum of fractions in two different ways none of your fractions should be equal to 0...
- M Mathematics HELP QUICK! 15 POINTS Rachel earned $36 interest on her savings account last year. The interest rate was 4.5%. How much money was in her account before the interest...
- L Law Which of the following is true? a. In a rough opening, the jack studs fit should not be too tight as the walls need room to settle. b. In a rough opening, the cripples...
- B Business Suppose that for emily, dvds and trips to the movie theater are perfect substitutes. currently, emily is spending all of her income on trips to the movie theater....
- M Mathematics The value of a car decreases as shown in the table below. Which statements are true? Check all that apply. Years after Purchase Value ($) 0 25,000 The function that...
- L Law In complete sentences, explain why evidence should be tested to determine its chemical properties? Why would this be helpful and/or necessary?...
Ответ:
a = 12 (cos(π/3) + i sin(π/3))
b = 3 (cos(π/4) + i sin(π/4))
a • b = 36 (cos(π/3) cos(π/4) + i cos(π/3) sin(π/4) + i cos(π/4) sin(π/3) + i ² sin(π/3) sin(π/4))
… = 36 (cos(π/3 + π/4) + i sin(π/3 + π/4))
… = 36 (cos(7π/12) + i sin(7π/12))
… ≈ -9.32 + i 34.8
Ответ:
-3.8
Step-by-step explanation: