## anonymous 4 years ago write each complex number in rectangle form. plot and label (with a-b) each point on the polar axes below.

1. anonymous

2. anonymous

|dw:1328210221927:dw|

3. anonymous

how do you write it in this form

4. anonymous

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))

5. anonymous

write in rectangular form means in this case evaluate the cosine and sine at the angles given, then multiply by the coefficient out front

6. anonymous

can't i do this in wolframe? or mathway.com?

7. anonymous
8. anonymous

just put in standard for. for example the one i sent write $-\sqrt{2}+\sqrt{2}i$

9. anonymous

oh so its pose to written like that?