3) cosA cosB cosC$ — — cos2C + — — cosC— cosC 2 730 ( "J T) cosA cosB cosC$0 2 sin2A...

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Transcript of 3) cosA cosB cosC$ — — cos2C + — — cosC— cosC 2 730 ( "J T) cosA cosB cosC$0 2 sin2A...