SOLUTION: Write each complex number in rectangular form. If necessary, round to the nearest tenth: 7(cos 3pi/2 + i sin 3pi/2) Thanks for your help :)

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Write each complex number in rectangular form. If necessary, round to the nearest tenth: 7(cos 3pi/2 + i sin 3pi/2) Thanks for your help :)      Log On


   



Question 88097: Write each complex number in rectangular form. If necessary, round to the nearest tenth:
7(cos 3pi/2 + i sin 3pi/2)
Thanks for your help :)

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
7%28cos+%283pi%2F2%29+%2B+i+sin+%283pi%2F2%29+%29

7%280+%2B+i+sin+%283pi%2F2%29+%29 Evaluate cos%283pi%2F2%29

7%280+%2B+i+%28-1%29%29 Evaluate sin%283pi%2F2%29

7%280%29+%2B+i%287%29+%28-1%29 Distribute

0-7i Multiply and simplify