SOLUTION: How and why is the equation under the link true
http://i.imgur.com/aI6UpK3.png
The i stands for imaginary unit. My teacher solved the whole problem on the board but didn't explai
Algebra.Com
Question 898382: How and why is the equation under the link true
http://i.imgur.com/aI6UpK3.png
The i stands for imaginary unit. My teacher solved the whole problem on the board but didn't explain how he did this particular equation.
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Because cis(v)/cis(u) = cis(v-u)
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