pre cal

how do you work out cot squared feta - CSC squared feta?

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1. Is feta an Italian version of Greek Theta?

ctn^2T-csc^2T
cos^2/sin^2 - 1/sin^2

(cos^2T-1)/(sin^2T)

but sin^2T+cos^2T=1 so
-sin^2T/Sin^2T= -1

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bobpursley

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