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OpenStudy (anonymous):
given: z1=2(cos50-isin50) z2=3(cos40+isin40) what is arg(3z1+2z2)
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OpenStudy (anonymous):
By arg, you mean the direction of the position vector?
OpenStudy (anonymous):
Got something funky when I tried using arctan function on my calculator, so just used geometry, and found -5 degrees. Does that seem reasonable?
OpenStudy (anonymous):
yeah i got the same answer wich means 5 degrees in the opposite way,same as 355
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