Question

if z=
$\cos( \alpha ) +i \sin( \alpha ) \: \: so \: 1 + z \div 1 - z$
​

Answer 1

Answer:

"If \\( z = \\cos \\alpha + i \\sin \\alpha \\) then the amplitude of \\( z ^ { 2 } + \\overline { z } \\) is:\n\\( \\ begin{array} { l l l } { \\text { (A) } \\frac { 3 \\alpha } { 2 } ...

Missing: [tex] ‎so ‎\div