Needing to evaluate the integral:

sin(2x)/(47+(cos(x))^2)dx

This question might belong somewhere else but.. It's been a while since I've taken trig and is (cos(x))^2 the same as cos^2(x) or 2cos(x) or something entirely different?

Printable View

- June 3rd 2010, 10:46 AMabel2Minor help with integrals
Needing to evaluate the integral:

sin(2x)/(47+(cos(x))^2)dx

This question might belong somewhere else but.. It's been a while since I've taken trig and is (cos(x))^2 the same as cos^2(x) or 2cos(x) or something entirely different? - June 3rd 2010, 10:52 AMGeneral
**Rewrite as**

**then substitute ..** - June 3rd 2010, 11:01 AMabel2
ahh, thanks. I'm not good with trig identities.