(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

definate integral to find length of line

x = int [sqrt( (sec t)^4 - 1)

integrate from 0 to y with -pi/4 < y > pi/4

it is actually y is equal or more/less than pi/4

3. The attempt at a solution

Ive worked out that the length of the line will be the same from -pi/4 to 0 as 0 to pi/4,

giving me

x = 2*int(sqrt( (sec t)^4 - 1)

integrating from 0 to pi/4,

im struggling with the integral, i know it must be substitution and i ve tried numerous trig identities just been coming up blank so far. a little push in the right direction would be great

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# Homework Help: Find th length of th line x = int sqrt(sec(t)^4 - 1)) from 0 to y

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