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scaryshark09

∞∆ who let 'em cook dis long ∆∞
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with 14a
why does |OS| = cos(theta/2)

i get why its theta/2 but why is is just cos??
 

scaryshark09

∞∆ who let 'em cook dis long ∆∞
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also what does the "or appeal to conjugate roots theorem" mean? can someone explain the working for that?
 

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