SOLUTION: find the product 2(cos10 degrees + i sin10 degrees)4(cos20 degrees + i sin20 degrees) then express the result in rectangular form

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Question 228740: find the product
2(cos10 degrees + i sin10 degrees)4(cos20 degrees + i sin20 degrees) then express the result in rectangular form
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply the magnitute times magnitude = 2*4.

Add the angles: 10 + 20 = 30 degrees.

=8 (cos 30 degrees + i sin 30 degrees)
=8+%28%28sqrt%283%29%29%2F2+%2B+i%2A%281%2F2%29%29
=4%28sqrt%283%29+%2B+i%29


Dr. Robert J. Rapalje