d) Determine the three culmroots of the complex number (-10 + j6)5 in both polar and Cartesian forms and show the roots on an Argand diagram. e) By equating the real parts of show that cos 50+ jsin 50 = (cos 8 + jsin 8 )5 = cos 50 Also express sin 50 as powers of sin 8. 16cos50 20cos³8+5 cos 0.

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