adamarir1003
adamarir1003 adamarir1003
  • 09-05-2020
  • Mathematics
contestada

The complex number -5i has the complex trigonometric form of 5(cos 270° + isin 270)

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mysticchacha
mysticchacha mysticchacha
  • 10-05-2020

Answer:

True ,   -5i =  5*(0 - i) =  5*( cos 3π/2  + i*sin 3π/2)  = 5*(cos 270 + i*sin 270)

Step-by-step explanation:

5*( cos 3π/2 radians  + i*sin 3π/2 radians)  = 5*(cos 270 degrees + i*sin 270 degrees)

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