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

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Question 1134032: Write the complex number in the form a + bi.
4[cos (-135°) + i sin (-135°)]
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
cos (-135) is -sqrt(2)/2 and sin (-135) is - sqrt(2)/2
-2 sqrt(2)-2i sqrt(2)
this is -2 sqrt(2)-2 sqrt(2)*i
it can also be written as -2sqrt(2)[1+i]