I'm trying to solve:(adsbygoogle = window.adsbygoogle || []).push({});

sin2x = -cos2x

so my first step was...

2sinxcosx = -cos^2x - sin^2x

and then...

2sinxcosx + cos^2x + sin2x = 0

but I'm confused on how I would end up factoring 2sinxcosx + cos^2x + sin2x, or if I did something wrong earlier in the problem...thank you

**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!

# Homework Help: Solving a trigonometric equation

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