Question

Write the complex number in the form a + bi.
4[cos (-135°) + i sin (-135°)]

Answer 1

@Loser66

Answer 2

take out your calculator, calculate cos, sin and plug in, that's it

Answer 3

4[-1/sqrt2 + (-1/sqrt2)i] ??

Answer 4

expand 4 into it, too

Answer 5

idk how to do that

Answer 6

= -4/sqrt (2) -4/sqrt(2) *i , done

Answer 7

can that be simplified to -2sqrt2 -2sqrt2*i?

Answer 8

ok, if you want to, time both by sqrt (2) ( i mean numerator and denominator of both terms)

Answer 9

-4sqrt2/sqrt4 = -4sqrt2/2 - 4sqrt2/2*i?

Answer 10

nope,