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2. install.packages("sos", dependencies = TRUE); library(sos); findFn("convert degree to radian") . · Very useful! Thank you @Pascal. – Iris · 3. ... <看更多>

I resolved that using (Pi/4) * (180 Degree /Pi). Degree is a symbol similar to Pi , it contains a value Pi / 180 and it keeps the symbolic form unless used ... ... <看更多>