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Integration C4 Question Watch

1. Just came across a question where it says to integrate:

1/sec^2y

I thought you'd do 1/(1+tan^2x) but that seems to complicate matters ?

Would appreciate the help,

Many thanks!
2. 1/sec2y = cos2y

this might help or I might be completely wrong xD
I'm 80% sure this will will help though

oh its a sqaured!
yh intergrate cos^2y
3. (Original post by Jasmine_777)
Just came across a question where it says to integrate:

1/sec^2y

I thought you'd do 1/(1+tan^2x) but that seems to complicate matters ?

Would appreciate the help,

Many thanks!

We know

So the integral becomes,

Now use the identity,
4. (Original post by raheem94)

We know

So the integral becomes,

Now use the identity,
ooh doh! didn't see that.

Thanks again!

Updated: April 15, 2012
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