Question

Write each complex number in rectangular form.

a. 2(cos(135)+i sin(135))
b. 3(cos(120))+i sin(120))
c. 5(cos(5pi/4)+i sin(5pi/4))
d. 4(cos(5pi/3)+i sin (5pi/3))

Answer 1

What type of math problem is this

Answer 2

i dont know

Answer 3

Lol how you not know

Answer 4

thats why im here to get help

Answer 5

Okay

Answer 6

\[Since, \cos135^@=\cos(180^@-45^@)=-\cos45^@=-1/\sqrt{2}, and, \sin135^@=\sin45^@=1/\sqrt2, z_1=2(-1/\sqrt2+i1/\sqrt2).\]