Does anybody know substitutions that can be used for the following integrals:(adsbygoogle = window.adsbygoogle || []).push({});

[tex]

\int (a^2 - b^2 \cos\theta)^{-3/2} d\theta

[/tex]

[tex]

\int (a^2 - b^2 \cos\theta)^{-3/2} \sin\theta d\theta

[/tex]

[tex]

\int (a^2 - b^2 \cos\theta)^{-3/2} \cos\theta d\theta

[/tex]

I also had a look for these in my table of integrals, but didn't see anything appropriate, but am also a bit rusty, and could just be overlooking the obvious.

EDIT: oops. fixed sign in square root.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Substitutions for some trig integrals?

**Physics Forums | Science Articles, Homework Help, Discussion**