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OpenStudy (anonymous):
cos 7theta + i sin 7theta / cos 2theta - i sin 2theta
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OpenStudy (aravindg):
Do you know de moivre theorem?
OpenStudy (aravindg):
Ok a btter method would be to use the fact that when 2 complex numbers are divided the arguments get subtracted
OpenStudy (aravindg):
*better
OpenStudy (aravindg):
Can you use that here?
OpenStudy (anonymous):
@kaf your reply will make a difference here... Please cooperate with @AravindG
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