- #1
bobsmith76
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Homework Statement
what is sec(pi/4)
what is sec(0)
The Attempt at a Solution
First let me make sure that cos^-1, acos and sec, they are all the same right?
I put in cos^-1(pi/4) in my calculator and the answer I get is .667, which I think is the same as sec (pi/4). The book says the answer is √2