Question

WILL AWARD METAL!!

Convert the polar representation of this complex number into its rectangular form Z=4(cos 150 degrees+isin 150 degrees)

a)-2(sqrt 3),2
b) -2, 2(sqrt 3)
c) -4, 4(sqrt 3)
d) -2(sqrt 3), -2

Please and thank you :)

Answer 1

@Thesn1 Please help?

Answer 2

Its A!

Answer 3

see with me my friend next time i ll get angry if you dont solve those kind of question alone
step 1 : 150deg=180deg+(-30deg)
step 2 we replace cos150 by -cos (30) and sin150 by sin30
then the write answer is a

Answer 4

Could you help me with one more?
It is write the product in standard form (1+3i)(5-i)?

I guess I don't know what the standard form is.

Answer 5

(1+3i)(5-i)=5-i+15i+3=8+14i

Answer 6

i have to go now i ll leave you a contact in message for more help

Answer 7

Okay thank you!