No idea how to procede, I see the first and last terms cancel out, my book says arcsec of 1 comes out to zero and infinity comes out to pi-halfs. How?

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- January 10th 2013, 05:33 AMNervousEvaluating arcsec at infinity...?

No idea how to procede, I see the first and last terms cancel out, my book says arcsec of 1 comes out to zero and infinity comes out to pi-halfs. How? - January 10th 2013, 07:37 AMebainesRe: Evaluating arcsec at infinity...?
The arcsecant of 1 is 0 because sec(0) = .

The arcsecant of is because - January 10th 2013, 08:13 AMHallsofIvyRe: Evaluating arcsec at infinity...?
Just to be pedantic- what ebaines really means .

(I just**refuse**to say that " "!) - January 10th 2013, 08:19 AMebainesRe: Evaluating arcsec at infinity...?
Go ahead - be pedantic! It keeps us honest.