What is the product of 65(cos(14°) + i sin(14°)) and 8(cos(4°) + i sin(4°))? a) 73(cos(18°) + i sin(18°))
b) 73(cos(56°) + i sin(56°))
c) 520(cos(18°) + i sin(18°))
d) 520(cos(56°) + i sin(56°))

Step-by-step explanation:

Complex  Numbers in Polar Form

Let Z1 and Z2 two complex numbers in the form:

The product of Z1*Z2 is given by:

The given complex number has:

Thus:

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)