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Triciamorrison
13.04.2021 •
Mathematics
using mathematical precise language explain in detail how you would multiply the complex number z1=r1 (cos theta1 + i sin theta 1) with the complex number z2=r2 (cos theta 2+sin theta 2
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Ответ:
Multiply the moduli and add the arguments.
Step-by-step explanation:
First write out the two terms being multiplied: z1z2= [r1(cos(theta 1) + isin(theta 1))][r2(cos(theta 2)+ isin(theta 2))]
z1z2= r1r2 (cos(theta 1) + isin(theta 1))(cos(theta 2)+ isin(theta 2))
z1z2= r1r2(cos(theta 1)cos(theta 2))+(icos(theta 1)sin(theta 2))+(icos(theta 2)sin(theta 1))+(i^2 sin(theta 1)sin(theta 2))
Next group and rewrite the like term with the sums and differences. Your answer is the multiplication of the moduli and the addition of the arguments: z1z2= r1r2[cos(theta 1 + theta 2) + i sin (theta 1 and theta 2)].
Ответ:
what gender are u?
Step-by-step explanation: