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Mathematics 9 Online
OpenStudy (anonymous):

3(cos91°+ i sin91°) dot (cos 39°+ i sin39°)

OpenStudy (anonymous):

= 3(cos(91°+91) + i sin (39°+39°)) right ??

OpenStudy (anonymous):

= 3( cos 182°+ i sin 78°) ?

OpenStudy (anonymous):

help me!!!

OpenStudy (alexwee123):

:)

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