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 ▼ Matt Swanson Junior Member Posts: 1 Threads: 1 Joined: Jan 1970 03-02-2005, 07:21 PM I just bought a 33s how do you do a sec(angle) calculation sec=r/x? Any help from an old pro? ▼ Thomas Okken Senior Member Posts: 727 Threads: 43 Joined: Jul 2005 03-02-2005, 07:25 PM sec(x) = 1 / cos(x) cosec(x) = 1 / sin(x) cot(x) = 1 / tan(x) Hope this helps! - Thomas

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