Question

Write the complex number z=-10+8i in polar form

Answer 1

Hello :
the  polar form is : z = |z |×e^(iθ)
z=-10+8i
 |z | =√((-10)²+(8)²) =√(164)
cosθ = -10/√(164)
sinθ = 8/√(164)
find θ by arctan(8/-10)